Question

Some animals are able to survive long periods without food because they

Answer 1

The Animal That Can Live Without Food for Weeks
Reptiles. A variety of snakes, including vipers and constrictors, can survive for weeks, sometimes months, without eating. ...
Insects and Arachnids. Cockroaches can survive without their head. ...
Fish. ...
Winter Fasting.

Answer 2

They usually have a large store of fat.