Very few animals are large enough. The sticking point is the breadth of a human's shoulders. Few creatures can distend their jaws enough to work past this obstacle. A large great white shark could do it, or possibly a sperm whale. A large killer whale might be able to.
Among terrestrial animals, there are none known that could swallow a large adult male human. There are several snakes (anaconda, Burmese python, Reticulated python, possibly ) that could swallow a small woman or child if the snake in question was a very large specimen.
Snakes,Sharks,and elephants
They swallow their prey whole.
An Anaconda, for sure. ------------------------------- The most known an famous breed for eating a whole goat and such sized animals are python's.
Most marine animals swallow their food whole. This is because they do not have teeth. But not all marine animals swallow their food whole. Some have small teeth.
If the snake is big enough it will just unhinge its jaws
That is true.
anything small enough to swallow whole
Well, it depends on what kind of snake you are talking about. Usually, snakes swallow their prey whole.
Animals such as snakes, frogs, and some birds like pelicans are known to swallow their food whole. They have unique anatomical adaptations that allow them to accommodate large prey in their digestive systems.
The Rattlsnake
Yes, they have no way to chew or tear off a chunk on the prey. They have to swallow it whole.
True