In a study of 60 cats fitted with cameras for seven to 10 days, a University of Georgia research team has found nearly 30 percent of them killed prey, ending the lives of two animals per week on average. Their prey? Unlucky lizards, snakes, and frogs accounted for 41 percent—but the cats ate only 30 percent of what they killed.

With the help of National Geographic Society's Crittercam project, the study also found the felines to be pretty adventurous, nearly half crossing roadways and a quarter eating and drinking things they found.