An NSA deputy director said that the no. 1. threat to the U.S. electrical grid is from these climbing rodents

The heart rate of this animal AKA a woodchuck decreases from 75 beats a minute to 4 during hibernation

Resembling the leopard this New World cat is a great swimmer & can hunt in water but prefers an ambush from land disabling its prey with a bite from its powerful jaws

Sleeping dolphins shut down one of these at a time; when the right one naps the left eye stays open & vice versa