Explanation of Pupil

Explanation of Pupil

Pupil

In Kentucky, the black part in the center of the eye (pupil) of harmless snakes is round. Venomous snakes have egg-shaped or cat-like (elliptical) pupils. 

Snake pupil shapes

Explanation of Head Shapes

Explanation of Head Shapes

Head Shape

Venomous snakes usually have a triangular (wide at the back and attached to a narrow neck) or 'spade-shaped' head. Be aware that many non-venomous snakes, such as watersnakes, flatten their heads when threatened and may be confused with venomous snakes.

Snake head shapes

Snake head shapes

Click here to view our Venomous Snakes of Kentucky (FORFS18-02) publication.