In Texas, the green water snake is one of ... and crayfish. Brazos water snakes are non-venomous, lack dangerous fangs, and are not constrictors. Despite their reputation, these snakes do not ...
Cottonmouth viper (Agkistrodon piscivorus) – 7 mph (11 kph) Commonly known as the water moccasin ... 6 mph (10 kph) The Texas rat snake is a non-venomous species that can move at a speed ...