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

London Zoo after an urgent rescue mission to save a species from the brink of extinction. In October last year, researchers rushed to Tantauco Park on the Chilean island of Chiloé to collect Southern Darwin's frogs,

The froglets were carried in the vocal sacs of 11 male Darwin's frogs, the zoo said. The male frogs rear their tadpoles until they metamoph into the next generation of Darwin's froglets.