Crocodiles open their mouths for 2 reasons: to cool off and to let spur-winged plovers get rid of parasites. the cooling is possible because the open mouth has more volume (surface area) for heat to escape.
Crocodiles are often seen on the beach, looking like they are asleep, with their mouths open. What they are doing is basking, they keep their mouths open to regulate their body temperature. People sweat, dogs and cats pant, and crocodiles open their mouths :)
they get birds to clean there teeth and skin
The large lizards with some teeth on the outside of their mouths are Crocodiles, whilst at the same time, the ones with teeth on the inside of their mouths are Alligators.
Many fish swim with their mouths open. They swim with their mouths open because the water goes into their mouths and out their gills, which is how they breathe.
Both Alligators and Crocodiles do the 'death roll'. All 23 species of Crocodilians can only open and close their mouths, and cannot move them from side-to-side like you or I, so have to do the 'death roll' in order to dismember their prey, as they can only eat their food whole.
Crocodiles are often seen on the beach, looking like they are asleep, with their mouths open. What they are doing is basking, they keep their mouths open to regulate their body temperature. People sweat, dogs and cats pant, and crocodiles open their mouths :)
Crocodiles can't open their mouths if you hold them shut. That's the only weakness I know of. Do you plan on fighting a crocodile anytime soon?
No. Crocodiles have muscles in their mouths that are extremely powerful, and designed to firmly. When submerging under water, they close their ear and nostril flaps. They have a third eyelid, called the nictitating membrane that protects their eyes underwater.
they get birds to clean there teeth and skin
They normally lie with their mouths partly open, and the local birds pick off any bits of flesh from the teeth.
Crocodiles eat through their mouths, like most advanced animals. They have very powerful jaws and teeth.
they carry their young in their mouths
The large lizards with some teeth on the outside of their mouths are Crocodiles, whilst at the same time, the ones with teeth on the inside of their mouths are Alligators.
yes
Crocodiles shut their mouth really quickly so that their prey like the fishes can't escape. If their prey keeps on escaping, the crocodiles will become very hungry.
to eat, or to sing, or to vomit into the mouths of their children
open