These frogs put the “group ... There the female discharges a watery fluid, whips it to a foam with her back legs, and puts in her eggs. At this point, says Byrne, up to 20 more males ...

Doctors would inject a woman's urine into the back of a female frog; if positive, the frog would lay eggs. Frog or "Hogben" tests were commonplace from the 1940s through the early 1960s.

After the female lays her eggs, the male fertilizes them and flattens ... One exception is found in a family of neotropical frogs. The male Panamanian poison-arrow frog is responsible for sitting ...

An endangered species of frog named after Charles Darwin has been saved from extinction - thanks to the London Zoo. A deadly ...

Frogs mate in a position called amplexus, with the smaller male clasping the female from behind in a ride that can last two days or more. As she lays eggs, he expels sperm to fertilize them.

Every year, female foothill yellow-legged frogs lay one egg mass containing 100 to 4,000 eggs (most often about 1,000 to 2,500). Foothill yellow-legged frogs may live as long as 10 to 15 years, ...