Apparently, some of these genetic mutations caused the local population of the Eastern tree frog, Hyla orientalis, to change its skin color from bright green to black (Figure 2).

ALCORN: Red and black with bright white toes like it just had its nails done. DE BEAUVOIR: Biologists estimate there are fewer than 5,000 of these frogs left in the wild.

Above ground, black rain frogs — which are about 1.6 to 2 inches (4 to 5 centimeters) long — run or walk, rather than hop: "Their legs are very short, and their bodies round," Tarrant said.

Why are there black frogs in Chernobyl? According to The U.S. Sun, experts have uncovered a large population of eastern tree frogs in the nuclear exclusion zone.

A newfound species of rain frog in Ecuador is likely already endangered. Scientists had long confused the amphibian with its close relative, Pristimantis ornatissimus, a well-known frog with a ...