by acting as an 'on-off switch' or a 'male-female switch' at the top of the developmental cascade," he says. In 2015, Evans—who has studied the African clawed frog for over two decades—led a ...

Be wary of a lethargic frog that doesn't readily accept food when it's offered, as such an animal is likely sick. Male ...

by acting as an ‘on-off switch’ or a ‘male-female switch’ at the top of the developmental cascade,” he says. In 2015, Evans—who has studied the African clawed frog for over two decades ...

A female African clawed frog, Xenopus laevis, was housed at the Biological Resources Facility of North Carolina State University in a tank with two other females. The frog was ∼1.5 years old and ...

African clawed frogs used to be the best human ... and supply some 100 different genetically-altered or mutated lines of frogs for researchers around the world. Altogether, they care for a total ...