Question

How to identify non poisonous and poisonous snakes?

Answer 1

Pupil size, for example, can often tellyou a poisonous snake from a non-poisonous snake; however, discerning this would lead you dangerously close to the creature itself. Most poisonous snakes have a pupil that resembles a cat's; an oblong shape with peaked ends, like a slit in the center of the eye.
hope it helps you

Answer 2

Look at the head. Most venomous snakes usually have triangular shaped heads.

Observe the colors. Some venomous snakes such as the coral snake have bright colors.