Average life span in the wild:Females 50 years, males 26 years
Size:Up to 10 ft (3 m)
Weight:Up to 300 lbs (140 kg)
Did you know?
The alligator gar has become something of an Internet celebrity. Tales and photos of these enormous, fierce-looking fish are widely circulated—and sometimes dismissed as hoaxes.
The only natural predator of most of the poison dart frog family is a snake called Leimadophis epinephelus, which has developed a resistance to the frogs' poison
Fishermen who hook mudpuppies will often cut their line rather than touch these extremely slimy amphibians, believing incorrectly that they are poisonous.
Ceratophyrines, living descendants of the devil frog, are sometimes called "Pac-Man frogs," because their round shape and oversized mouth resembles the old video game character.