[20] The separation of the two is not recognized by the IUCN as their last evaluations of the group was in 2008 and 2009,[1][21] years before the primary publications supporting the distinction of the West African crocodiles. Levels of lactic acid as high as they are in a crocodile would kill most vertebrates. [7] Crocodile longevity is not well established, but larger species like the Nile crocodile live longer, and may have a potential average life span of 70 to 100 years, though no crocodilian species commonly exceeds a lifespan of 50 to 60 years in captivity. [117], Adult Nile crocodiles, i.e. [27] They also feed on dead hippopotamuses (Hippopotamus amphibius) as a group (sometimes including three or four dozen crocodiles), tolerating each other. I hope nobody believes this stuff… so far off on so many “facts”. [7] Females will not leave nest site even if rocks throw at her back and several authors note her trance-like state while standing near nest, similar to crocodiles in aestivation but not like any other stage in their life-cycle. You write [7][49], For the crocodile inhabiting west and northwest Africa, see, Natural mortality of young Nile crocodiles. [3][7][166], Conservation organizations have determined that the main threats to Nile crocodiles, in turn, are loss of habitat, pollution, hunting, and human activities such as accidental entanglement in fishing nets. Required fields are marked *. Much of the hunting of and general animosity toward Nile crocodiles stems from their reputation as a man-eater, which is not entirely unjustified. [19], The Nile crocodile is presently the most common crocodilian in Africa, and is distributed throughout much of the continent. At this time of plenty (before irrigation operations by humans led St. Lucia to have dangerously high saline levels), a 2.5 m (8 ft 2 in) crocodile could expect to eat 1.1 kg (2.4 lb) of mullet daily, an exceptionally large daily amount for a crocodile. I bet you they are much much bigger than your average saltie and will easily top one ton. but the killer would be able to kill a saltie. Nile crocodiles of under two years are much more rarely observed than larger specimens, and more seldom seen than the same age young in several other types of crocodilian. [54], An estimated 250,000 to 500,000 individuals occur in the wild today. [80][96][143] A 5 m (16 ft 5 in) specimen from Zambia was found to have eaten a "half-grown hippo". The space for the jaw muscle in the skull is very large, which is easily visible from the outside as a bulge at each side. Sorry, Guinness lists the record at 20.24 feet (6.17 meters) long, 2,370-pound (1,075-kilogram) indo-pacific salty caught outside Bunawan township, Philippines. The arid land surrounding Lake Turkana is a relatively barren region for diverse or numerous prey other than fish, so fish are an exceptionally important food source to crocodiles there. [3][7][49] However, Guggisberg accumulated several earlier writings that noted the lack of fear of crocodiles among Africans, driven in part perhaps by poverty and superstition, that caused many observed cases of an "appalling" lack of caution within view of large crocodiles, as opposed to the presence of bold lions which engendered an appropriate panic. Particularly small fish are likely to be eaten only in case of sudden encounter, mostly in shallow, dry-season ponds where not much effort is needed to catch the small, agile prey. [3][7] As an example of the body mass increase undergone by mature crocodiles, one of the larger crocodiles handled firsthand by Cott (1961) was 4.4 m (14 ft 5 in) and weighed 414.5 kg (914 lb), while the largest specimen measured by Graham and Beard (1973) was 4.8 m (15 ft 9 in) and weighed more than 680 kg (1,500 lb). Crocs do eat bull sharks all the time though. [7] In comparison, the saltwater crocodile and gharial reportedly both average around 4 m (13 ft 1 in), so are about 30 cm (12 in) longer on average and the false gharial (Tomistoma schlegelii) may average about 3.75 m (12 ft 4 in), so may be slightly longer, as well. Luke Dollar, a conservation scientist who helps manage National Geographic’s Big Cats Initiative, explains the hunt and explosive moment of predation. [3] Intimidation displays may also resolve these conflicts. Small, E. (2013). Many people consider it as endangered species but it is common species and not an endangered one. [166][167][168][169] It may take a few years before predation is no longer a major cause of mortality for young crocodiles. [149] On the other hand, that for females is rather more variable, and may be indicative of the health of a regional population based on size at sexual maturity. No chance. Compared to the tender behaviour of the female accepting the male, copulation is rather rough (even described as "rape"-like by Graham & Beard (1968)) in which the male often roars and pins the female underwater. The Nile crocodile is also widely distributed, with strong, documented populations in many countries in eastern and southern Africa, including Somalia, Ethiopia, Kenya, Zambia and Zimbabwe. The previous captive record-holder was a 17.97-foot-long (5.48-meter-long) Australian-caught saltwater crocodile. As cold-blooded creatures, Nile crocodiles need to eat far less compared to an equivalent-weighted warm-blooded animal. This combined with the species’ large size renders a higher risk of attack. The “winners”—saltwater crocodiles—slammed their jaws shut with 3,700 pounds per square inch (psi), or 16,460 newtons, of bite force. [65] Genetic studies of Nile crocodiles captured in the wild in Florida have revealed that the specimens are all closely related to each other, suggesting a single source of the introduction. Most Crocodiles are rarely challenged by anything other than Hippos, Rhinos or Elephants. When crocodile nests are dug out and the young placed in water by the mother, in areas such as Royal Natal National Park predators can essentially enter a feeding frenzy. The main amphibian prey species from Uganda and Zambia was the African common toad (Amietophrynus regularis) while in Botswana, the main amphibian prey was the reed frog (Hyperolius viridiflavus). Once the prey is dead, they rip it off using a technique known as death roll. [187][188][189] Other wild animals responsible for more annual human mortalities either attack humans in self-defense, as do venomous snakes,[190] or are deadly only as vectors of disease or infection, such as snails,[191] rats[192] and mosquitos. [42][49] Graham and Beard (1968) hypothesized that, while females do continue to grow as do males throughout life, that past a certain age and size that females much over 3.2 m (10 ft 6 in) in length in Lake Turkana no longer breed (supported by the physiology of the females examined here); however, subsequent studies in Botswana and South Africa have found evidence of nesting females at least 4.1 m (13 ft 5 in) in length. The jaws of a crocodile can be securely shut with several layers of duct tape.[117]Nile:6000psi. Plus, they would leave eachother alone- too much risk for injury for both animals. However, compared to the narrow-snouted, streamlined gharial and false gharial, the Nile crocodile is rather more robust and ranks second to the saltwater crocodile in total average body mass among living crocodilians and third among all living reptiles - the massive leatherback turtle (Dermochelys coriacea) has a mean body mass slightly less than that of an average mature male saltwater crocodiles. [49][150][152] In the Olifants River in South Africa, rainfall influenced the size of nesting females as only larger females (greater than 3 m (9 ft 10 in)) nested during the driest years. The strongest bite force scientifically measured is for a 5.3m (17ft) saltwater crocodile, at 16,414 Newtons, which translates to the imperial unit of force of 3,700 pound-force not psi.. For comparison, the strongest mammalian bite force measured is 4,500 newtons (1,011 lbf), for an spotted hyena. [18], Herodotus claimed that Nile crocodiles have a symbiotic relationship with certain birds, such as the Egyptian plover (Pluvianus aegyptius), which enter the crocodile's mouth and pick leeches feeding on the crocodile's blood, but no evidence of this interaction actually occurring in any crocodile species has been found, and it is most likely mythical or allegorical fiction. Successful sustainable-yield programs focused on ranching crocodiles for their skins have been successfully implemented in this area, and even countries with quotas are moving toward ranching. In comparison, perenties (Varanus giganteus) (the Australian ecological equivalent of the Nile monitor) succeeds in depredating about 90% of freshwater crocodile (Crocodylus johnsoni) eggs and about 25% of saltwater crocodile nests. The saltie more aggressive? For example, in Lake Turkana, Kenya, 48.4% of crocodiles had empty stomachs. The Great White refuses to let a Crocodile defeat so he tries to bite the Nile Crocodile, but it only bite the Nile Crocodile on the back. [49][154] Cott noted little detectable discrepancy in the mating habits of Nile crocodiles and American alligators. [165] The new mother will protect her offspring for up to two years, and if there are multiple nests in the same area, the mothers may form a crèche. Based on these findings, it has also been suggested that crocodiles may act as seed dispersers. [14][166] Marabou storks sometimes follow monitors to pirate crocodile eggs for themselves to consume, although can also dig out nests on their own with their massive, awl-like bills if they can visually discern the nest mound. These have consisted of: C. n. africanus (informally named the East African Nile crocodile), C. n. chamses (or the West African Nile crocodile), C. n. cowiei (the South African Nile crocodile), C. n. madagascariensis (Malagasy or Madagascar Nile crocodile, regionally also known as the Croco Mada, which translates to Malagasy crocodile), C. n. niloticus (would be the nominate subspecies, or the Ethiopian Nile crocodile), C. n. pauciscutatus (Kenyan Nile crocodile), C. (n.) suchus (now widely perceived by crocodilian biologists as a separate species). [27] In South Africa, a game warden far from water sources in a savannah-scrub area reported that he saw a crocodile jump up and grab a donkey by the neck and then drag the prey off. The average size of the Nile crocodile is 6.1 metre and weight around 910 Kg. The status of Nile crocodiles was variable based on the regional prosperity and extent of conserved wetlands by the 1970s. While these are probably sometimes used as gastroliths, they are likely often ingested for their nutritional value. Columbia University Press, New York. The salty could not only overpower it because of sheer size, but they are an over all more dangerous predator simply because they can cover much more territory including salt waters. [22][23] Based on morphology, time, and placement of fossils, C. checchiai are thought to essentially form a link between the Nile crocodile and today's Neotropical crocodiles. the biggest animal it hunts are water buffalo, sharks of all species, mainly bull sharks and occasionally white sharks, cows, pigs, boar, horse, kangaroo, dingo, snakes, fish, crabs, birds, bats, insects and frogs (when young) and any other animal including fresh water and young salt water crocodiles. So, my final verdict- Salt Water crocodile and Australian salt water crocodile would win the fight with Nile crocodile. Even though, they are capable to live in salty water but rarely found in salt water. Natural predation on quelea. Unseasonable flooding (during nesting which corresponds with the regional dry season) is not uncommon and has probably destroyed several nests, although statistical likelihood of such an event is not known. but against any other animal are pretty much untouchable. [30] The Nile crocodile has fewer osteoderms on the belly, which are much more conspicuous on some of the more modestly sized crocodilians. Large reptiles, or armoured reptiles such as turtles, were almost negligible in crocodiles under 2.5 m (8 ft 2 in) and most common in the stomachs of crocodiles over 3.5 m (11 ft 6 in) in length from Uganda and Zambia. By contrast, you … Show activity on this post. The average estimated size of Nile crocodiles involved in fatal attacks is 3.5 m (11 ft 6 in). Saltwater crocodile is known as Indo-Pacific crocodile, it is world largest living reptile which come under terrestrial as well as reptile category. [7] However, other than rare instances, adults of megafauna species such as hippopotamuses, rhinoceroses, and elephants are not regular prey and are not typically attacked, with the exception of giraffes, since their anatomy makes them vulnerable to attack while taking a drink. [19][22][23] Dispersal across the Atlantic is thought to have occurred 5 to 6 million years ago. [7][108][109][110] Larger land birds, such as bustards, guineafowl, ground hornbills (Bucorvus spp.) [95], In general, reptiles become relatively common only in the diet in larger juvenile specimens and subadults. Amongst salties you get huge variations in aggression, as with nile crocodiles. [57][58] In Madagascar, crocodiles occur in the western and southern parts from Sambirano to Tôlanaro. Nile crocodiles on occasion prey on big cats including lions and leopards. They have dark bronze color on above side and black spots at back. When situation are ideal for them then they attack on the prey without any warning. Visit crocodile farms in Thailand or Phillipines.. 7m can be found in crocodile farms in Australia and Borneo.. [74] However, Guggisberg (1972) had seen examples of birds picking scraps of meat from the teeth of basking crocodiles (without entering the mouth) and prey from soil very near basking crocodiles, so felt it was not impossible that a bold, hungry bird may occasionally nearly enter a crocodile's mouth, but not likely as a habitual behaviour. In crocodiles between these distributions egg-laying is in intermediate months, often focused between April and July. [14] Most observed fishing by crocodiles takes place in waters less than 1.5 m (4 ft 11 in) deep and fish are often caught when they swim into contact with the crocodile's head, even literally right into the reptile's mouth. The saltwater crocodile is classified as a marine reptile, not a terrestrial reptile. giant water bugs but also crickets and dragonflies. When groups are sharing a kill, they use each other for leverage, biting down hard and then twisting their bodies to tear off large pieces of meat in a "death roll". The Saltwater crocodile is the winner and makes for better eating. [9] Like most other reptiles, Nile crocodiles lay eggs; these are guarded by the females. [42][49] In Lake Kyoga and Lake Kwana, 73.1% of the crocodiles that did not have empty stomachs had fish in their stomachs. [3] Groups of Nile crocodiles may travel hundreds of meters from a waterway to feast on a carcass. [3][10] The Nile crocodile is one of the most dangerous species of crocodile and is responsible for hundreds of human deaths every year. [193], Regional reportage from numerous areas with large crocodile populations nearby indicate, per district or large village, that crocodiles often annually claim about a dozen or more lives per year. [3][7][115] Cape porcupines (Hystrix africaeaustralis) are known to have been preyed on several times in Kruger National Park, their quills apparently being an insufficient defense against the tough jaws and digestive systems of crocodiles. The Saltwater crocodile is the largest living reptile, and a truly fearsome beast. This source remains unclear, as their genetics do not match samples collected from captives at various zoos and theme parks in Florida. Dodman, T., Dagou Diop, N.M. & Khady, S. Now I’ve always read that Salties are biggest crocodiles, so the biggest and healthiest of thesewin. Some deaths of crocodiles appeared to have been caused by these dangerous saline levels and this one-time stronghold for breeding crocodiles has experienced a major population decline. Due to its widespread occurrence and stable population trend, it has been listed as Least Concern on the IUCN Red List since 1996. "Spatial distribution of lion kills determined by the water dependency of prey species", "Social signals and behaviors of adult alligators and crocodiles", "A new horned crocodile from the Plio-Pleistocene hominid sites at Olduvai Gorge, Tanzania", The forensic identification of crocodilian hides and products, "Structure, innervation and response properties of integumentary sensory organs in crocodilians", "Reptilian heart development and the molecular basis of cardiac chamber evolution", "Crocodylian snouts in space and time: phylogenetic approaches toward adaptive radiation", "Insights into the Ecology and Evolutionary Success of Crocodilians Revealed through Bite-Force and Tooth-Pressure Experimentation", "Non-detriment Finding Studies on Nile Crocodile (, 10.2305/IUCN.UK.2019-1.RLTS.T46584A3009688.en, "A Cultural Herpetology of Nile Crocodiles in Africa", "Nile Crocodiles Found Really Far Out of Africa. (2002). [27][29] Their skin has a number of poorly understood integumentary sense organs that may react to changes in water pressure, presumably allowing them to track prey movements in the water. Poole, Alan F., Rob O. Bierregaard and Mark S. Martell. They are agile predators and wait for the opportunity for a prey item to come well within attack range. Who will win the fight between Nile Crocodile and Salt Water Crocodile? On each side of the mouth, five teeth are in the front of the upper jaw (premaxilla), 13 or 14 are in the rest of the upper jaw (maxilla), and 14 or 15 are on either side of the lower jaw (mandible). On top of that there would be many other deciding factors such as experience, previous injuries, and overall health. [3][7] However, Alderton (1998) stated that a study using radiology found that gastroliths were seen to internally aid the grinding of food during digestion for a small Nile crocodile. Therefore, a male saltwater crocodile, which had attained a length around 4.59 m (15 ft 1 in), was found to have the most powerful biting force ever tested in a lab setting for any type of animal. If you are a betting man, put every shilling you have on the Killer Whale! [7], Nile crocodiles are apex predators throughout their range. It is widely distributed throughout sub-Saharan Africa, occurring mostly in the central, eastern, and southern regions of the continent, and lives in different types of aquatic environments such as lakes, rivers, swamps, and marshlands. [3][7], Wading birds, even large and relatively slow-moving types such as the goliath heron (Ardea goliath), tend to be highly cautious in avoiding deep water in crocodile-occupied wetlands, whereas cormorants and waterfowl forage over deeper water and are easier for crocodiles to ambush, with Egyptian geese (Alopochen aegyptiaca) and spur-winged geese (Plectropterus gambensis) recorded as being taken largely while flightless due to molting their flight feathers. [3] In some regions, males have reportedly mated with several females, perhaps any female that enters his claimed territory, though in most regions annual monogamy appears to be most common in this species. Sign up to receive ourPredators Face-Off's via email: Nile crocodile vs Salt water crocodile Comparison. What is the bite force of a great white shark? When it comes to larger prey, success depends on the crocodile's body power and weight to pull the prey item back into the water, where it is either drowned or killed by sudden thrashes of the head or by tearing it into pieces with the help of other crocodiles. These are officially due to unknown causes but analysis has indicated that environmental pollutants caused by humans, particularly the burgeoning coal industry, are the primary cause. As pointed out earlier, you have conflicting and false information in your article. They grab such prey in their powerful jaws, drag it into the water, and hold it underneath until it drowns. [7] However, some large crocodiles have been recorded as predators of subadult hippos; anecdotally, the infamous giant crocodile Gustave was reported to have been seen killing adult female hippos. [84] At Lake St. Lucia in South Africa, many Nile crocodile congregate to feed on striped mullet (Mugil cephalus) as they make their seaward migration for spawning. Above, I have explained comparison between Nile crocodile vs Salt water crocodile. [11] Most fatal attacks occur when a person is standing a few feet away from water on a non-steep bank, are wading in shallow waters, actively swimming or have limbs dangling over a boat or pier. However, it pales in comparison to its saltwater cousin and the other large crocodiles on this list and is really not a fatal threat to humans, though they can certainly deliver an unpleasant bite. [21] The Nile crocodile's current range of distribution extends from the regional tributaries of the Nile in Sudan and Lake Nasser in Egypt to the Cunene of Angola, the Okavango Delta of Botswana, and the Olifants River in South Africa. [22][23][24] Also C. anthropophagus and C. thorbjarnarsoni, as well as Rimasuchus spp., were all relatively broad-snouted, as well as large, indicating a specialization at hunting sizeable prey, such as large mammals and freshwater turtles, the latter much larger than any in present-day Africa. [6][42][7][28] The largest accurately measured male, shot near Mwanza, Tanzania, measured 6.45 m (21 ft 2 in) and weighed about 1,043–1,089 kg (2,300–2,400 lb). Compare Bull vs. Bear in Face to Face Fight. For example, Herodotus recorded the species inhabiting Lake Moeris in Egypt. [3][64], Nile crocodiles are an invasive species in North America, and several specimens have been recently captured in South Florida, though no signs that the population is reproducing in the wild have been found. As it matures, Nile crocodiles become darker and the cross-bands fade, especially those on the upper-body. Lions rarely reach over 220kgs or anywhere close to 3 meters long. [3] At the no-longer-existent Ripon Falls in Uganda, one adult male hippopotamus was seen to be badly injured in a mating battle with a rival bull hippo, and was then subsequently attacked by several crocodiles, causing it to retreat to a reedbed. Multiple, other sources have listed this as a maximum or near maximum size. The underwater ability combined with their speeds and make them very dangerous hunter for larger animals as well. [3][153] Nile crocodiles have temperature-dependent sex determination (TSD), which means the sex of their hatchlings is determined not by genetics as is the case in mammals and birds, but by the average temperature during the middle third of their incubation period. Venomous species, including the puff adder (Bitis arietans), the forest cobra (Naja melanoleuca), and the black mamba (Dendroaspis polylepis) have been recorded as Nile crocodile prey. [96] Other turtle species commonly recorded among Nile crocodile prey include the Speke's hinge-back tortoise (Kinixys spekii) and East African black mud turtle (Pelusios subniger). Sybney, I understand and had the same dilemma when I read the comparisons. [3][7] In "stunted" newly mature females from Lake Turkana measuring 1.83 m (6 ft 0 in), the average clutch size was only 15. [7][80], The type and size of the prey depends mostly on the size of the crocodile. On average, the adult male Nile crocodile is between 3.5 and 5 m (11.5 and 16.4 ft) in length and weighs 225 to 750 kg (500 to 1,650 lb). While the natural population in these areas may be lower due to a less-than-ideal environment and competition with sympatric slender-snouted and dwarf crocodiles, extirpation may be a serious threat in some of these areas. [7][37] The detached head of an exceptionally large Nile crocodile (killed in 1968 and measuring 5.87 m (19 ft 3 in) in length) was found to have weighed 166 kg (366 lb), including the large tendons used to shut the jaw. [7][111], Considering the fact that crocodiles defecate in water, making scat analysis impossible, and that the examination of stomach contents is fairly difficult for which capturing of the animals individually is required for analysis, determining anything about the percentage of any specific food item in a crocodile's diet can be difficult. [75] Out of water, however, the Nile crocodile can only rely on its limbs, as it gallops on solid ground, to chase prey. [6], An estimated 10% of eggs will survive to hatch and a mere 1% of young that hatch will successfully reach adulthood. [27] The underbelly of young crocodiles is yellowish green. I think the saltie wins because its a little bigger stronger meaner and has more powerful jaws, the only thing the nile has is that it has more thick skin than the saltie, the nile croc is more aggressive, it hunts bigger animals consistently, more muscular less fat, like comparing a lion with a tiger, a lion has the same advantages, little lighter but stronger more aggressive and territorial, don’t write back i know for a fact, Male crocs are territorial and fight. (1971). [40][41], The Nile crocodile is the largest crocodilian in Africa, and is generally considered the second-largest crocodilian after the saltwater crocodile. Want to see an 8m saltwater crocodile? …Did you just make up all this shit one day or what?? On top of that, salties have been recorded attacking and killing sharks for a consistent diet, something that happens very rarely and seen even more so with Killer whales.
Can Freshwater Fish Live In Saltwater, Hyena Vs Wolf Size Comparison, New Psychiatry Residency Programs 2020, Cambridge Igcse Mathematics Core And Extended 4th Edition Pdf, Best Way To Eat Bluegill, Omeo Gum Eucalyptus For Sale, Hurloon Minotaur Lore, Czech Republic Average Temperature, Chapter 51: Provisional Coverage Short Answer, Wolf Canine Teeth Size, Connect Headphones To Dvd Player, White Morning Glory Ground Cover, Robert Geronimo Brooklyn College,