LONDON– After a 7,000-mile journey to London in October, 33 tiny Darwin's frogs were born recently at the London Zoo. The froglets were carried in the vocal sacs of 11 male Darwin's frogs ...

London (CNN) — Eleven endangered male frogs that traveled 7,000 miles (11,000 kilometers) in a bid to save their species from extinction have “given birth” to 33 froglets at London Zoo.

A team of researchers set out to study a supposedly widespread species of tree frog known as Litoria revelata. For years, these frogs had been a puzzle for scientists because they lived in three ...

Eleven endangered male frogs that traveled 7,000 miles (11,000 kilometers) in a bid to save their species from extinction have “given birth” to 33 froglets at London Zoo. Originally from Parque ...