The teeth curl backwards to prevent struggling prey from escaping.
Snakes have teeth positioned along their upper and lower jaws. These teeth are curved backwards to facilitate gripping and holding onto prey. Most snakes have both fangs for injecting venom (if venomous) and smaller teeth for gripping and swallowing prey.
Snakes curl up when they are sleeping and resting. Snakes may also begin to curl before an attack. It is best to stay away from a snake if you are not sure what the behavior is.
ask an american
no
They curl themselves up in order to stay warm.
Snakes have fangs.
Snakes do have teeth, but they are very small. The teeth of a snake are not made for chewing but for keeping a grip on prey. The fangs of venomous snakes are also modified teeth.
to reduce heat loss
Do snakes eat cherries?
They can ! At least many of my snakes can anyway - you'd be surprised where they can get under, into and around !
Because snakes can't crawl
No not all snakes have fangs. Only snakes with Venom have the fangs, they use these to inject the venom. Snakes which kill their prey by constriction (squeezing) do not have fangs, they have rows of tiny teeth to grip there food as they swallow there prey.