Staff at at the Taronga Zoo in Australia were shocked when they found a joey peeking from its mother's pouch. Don't forget to get your DNews Daily Bite weekdays at 12/11c on Animal Planet!

Noone expected the brushtailed rockwallaby to be pregnant, as the joey’s father had left the zoo more than a year ago. This phenomenon, called embryonic diapause, is a survival mechanism that allows the mother to delay the embryo's development, thus postponing the birth until a favourable habitat is found.