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The hippopotamus (Hippopotamus amphibius) (/ ˌhɪpəˈpɒtəməs /; pl.: hippopotamuses; also shortened to hippo (pl.: hippos), further qualified as the common hippopotamus, Nile hippopotamus, or river hippopotamus, is a large semiaquatic mammal native to sub-Saharan Africa. It is one of only two extant species in the family Hippopotamidae ...
The largest land mammal extant today is the African bush elephant. The largest extinct land mammal known was long considered to be Paraceratherium orgosensis, a rhinoceros relative thought to have stood up to 4.8 m (15.7 ft) tall, measured over 7.4 m (24.3 ft) long and may have weighed about 17 tonnes.
The American alligator (Alligator mississippiensis), sometimes referred to as a gator, or common alligator is a large crocodilian reptile native to the Southeastern United States and a small section of northeastern Mexico. It is one of the two extant species in the genus Alligator, and is larger than the only other living alligator species, the ...
The smallest amphibian (and vertebrate) in the world is a frog from New Guinea (Paedophryne amauensis) with a length of just 7.7 mm (0.30 in). The largest living amphibian is the 1.8 m (5 ft 11 in) South China giant salamander ( Andrias sligoi ), but this is dwarfed by prehistoric temnospondyls such as Mastodonsaurus which could reach up to 6 m ...
The largest living species of the family Felidae is the tiger (Panthera tigris), [ 26 ] with reports of males up to 388.7 and 465 kg (857 and 1,025 lb) in the wilderness and captivity, respectively. [ a ] Captive ligers, hybrids between lions (P. leo) and tigers, can grow up to non-obese weights over 410 kg (900 lb).
Alligator. An alligator, or colloquially gator, is a large reptile in the genus Alligator of the family Alligatoridae of the order Crocodilia. The two extant species are the American alligator (A. mississippiensis) and the Chinese alligator (A. sinensis). Additionally, several extinct species of alligator are known from fossil remains.
Active. Amphibian Species of the World 6.2: An Online Reference (ASW) is a herpetology database. It lists the names of frogs, salamanders and other amphibians, which scientists first described each species and what year, and the animal's known range. The American Museum of Natural History hosts Amphibian Species of the World, which is updated ...
The blue whale is the largest animal alive today. Bruhathkayosaurus is potentially the largest animal to have walked the earth. Clockwise from top left: an African bush elephant, the largest extant terrestrial animal; a blue whale, the largest animal ever to exist; and a colossal squid, the largest invertebrate.