How do snakes eat if they do not have teeth?

Snakes have a flexible lower jaw. They
can open their mouths very wide and swallow
prey that is bigger than they are. After a big
meal, a snake moves very slowly, so that the
prey can be digested. Digestion needs so
much energy that some snakes, like the
Mexican rattlesnake, increase their
temperature by 14 °C (57 °F). Once
digestion is complete, a snake excretes
the hair and claws of its prey. Snakes
cannot digest plants.