Although all snakes have a long, cylindrical body, many species have unique modifications suited to habitats / lifestyles. Examples: burrowing snakes have muscular stout bodies and solid heads ; sea snakes have flattened, paddle-like tails; tree-dwelling snakes are long and thin.

Dry heaths are the best habitats, but semi-natural areas such as railway embankments, sea walls etc. and most sunny south facing areas with a slope/open vegetation are suitable.
All snakes can eat their prey whole as their jaws open very wide, with the upper and lower jaws able to move separately.