Cottonmouth viper (Agkistrodon piscivorus ... 6 mph (10 kph) The Texas rat snake is a non-venomous species that can move at a speed of up to 6 mph (10 kph) while hunting for prey such as ...
As per the National Library of Medicine, when an individual is bitten by a snake, the venom spreads quickly through the bloodstream, putting a person's life at risk.