鰐 - alligator, crocodile

American alligator (Alligator mississippiensis)

knock-kneed; pigeon-toed

Orinoco crocodile (Crocodylus intermedius)

Philippine crocodile (Crocodylus mindorensis)

crocodile; alligator; crocodilian

crocodile or alligator skin (hide)

Chinese alligator (Alligator sinensis)

ferocious shark

crocodile; alligator

wide mouth

Nile crocodile (Crocodylus niloticus)

Toyotamaphimeia machikanensis (Japanese fossil species of crocodilian)