African clawed frogs used to be the best human pregnancy tests in the world. Doctors would inject a woman's urine into the back of a female frog; if positive, the frog would lay eggs. Frog or ...

A female African clawed ... the frogs covered with approximately 1–2 inches of water during the tank water change. The frogs were fed a pelleted diet that consisted of Sinking-Frog-Food (3/ ...