The frogs were fed a pelleted diet that consisted ... Figure 1: The oral cavity of a 1.5-year-old, female African clawed frog (Xenopus laevis) at necropsy.

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 ...

British zoologist Lancelot Hogben was studying African clawed frogs (Xenopus laevis) when he noticed that their skin color ...

After a heavy rain swells pools in the African landscape, male frogs gather in poolside vegetation and call for mates, while females in the pools absorb water through their skin. When she’s ...