What is the difference between a snake and a cobra?

Cobras are highly venomous snakes belonging to the family elapidae . Cobras are well known for rearing up and spreading their upper bodies to form a hood when threatened. It is not uncommon for a bite from a cobra to be fatal. Cobras can be found in various parts of Europe and Asia.

Water snakes are can be any of a number of snakes that spend most of their time in or near fresh water. Most are colubrids and are either nonvenomous or only mildly venomous.