Whipsnade

Newsreel footage from 1960 shows cubs Aurora and Polaris playing in their enclosure at Whipsnade.

Keepers say they are "delighted" with the cubs' progress, urging the public to help name them.

The four cubs were born in January and will be named once their sex has been confirmed, keepers say.

The rare Northern African triplets, born at Whipsnade Zoo in November, will be monitored by vets.

The nine-week-old northern African lion cubs have been pictured playing outside at Whipsnade zoo.

The cubs will be named after their first vet check at eight weeks old.

The wild population of boxer pupfish in Mexico appear to have gone extinct, conservationists say.

A zoo says the calf is important for the conservation of southern whites, a threatened breed.