Alligators are reptiles mentioned briefly in the How to Train Your Dragon Book series.
Alligators (Genus Alligator) are large semi-aquatic reptiles, closely related to crocodiles. There are only two species alive today, the American Alligator (Alligator mississippiensis) of the Southern United States, and the Chinese Alligator (Alligator sinensis) which was once widespread in China but now only occupies a small area on the country's East coast.
Alligators are low-slung long-bodied reptiles with a broader head than that of crocodiles. They have a heavy paddle-like tail they use for swimming. Their eyes and nostrils are situated on top of their heads so that they can still see and breathe while submerged.
Alligators are top predators in their habitats, eating other animals without much preference, including fish, invertebrates (when young), birds, deer and various other mammals, and even other top predators occupying their territory.
In the Book series, alligators do not actually appear, and are only used as a descriptor.
In reality, however, alligators are consumed by humans, harvested for their hides, and in China alligator parts may be used in Eastern medicine. Alligators are also common inhabitants of zoos and parks.
|“||Oh for Thor's sake you stupid alligator ...||”|
|— Thin Prefect|
Sharkworm dragons are described in detail in Book 3, including comparison to alligators. These dragons are said to have "thick, muscly alligator legs".
One Hunting Dragon's name is Alligatiger, a combination of 'alligator' and 'tiger'.