Trivia: What kind of animal is the smallest known vertebrate?
Bat
Frog
Turtle
Lemur
The correct answer is Frog
So why is this answer correct? : Found in southern Papua New Guinea, the Paedophryne amauensis is a frog the size of a housefly. With an average length of .3 inches (or 7.7 millimeters), the frog easily fits on a dime and is slightly smaller than the previously known record holder for smallest vertebrate, a tiny fish called Paedocypris progenetica.