Red kangaroo unusual ability to delay birth of their baby until their previous Joey has left the pouch. This is called embryonic diapause. Copulation may last 25 minutes. The red kangaroo has the typical reproductive system of a kangaroo. The neonate emerges after only 33 days. Usually only one young is born at a time. It is blind, hairless, and only a few centimetres long. Its hind legs are mere stumps; it instead uses its more developed forelegs to climb its way through the thick fur on its mother's abdomen into the pouch, which takes about three to five minutes. Once in
Kangaroo rat in a short time, perhaps to ensure greater chances of producing offspring. Mating in banner-tailed kangaroo rats involve more chasing and foot drumming in the male before the females allows him to mate. Banner-tailed kangaroo rats mate on mounds and the more successful males chase away rival males. The gestation period of kangaroo rats lasts 22–27 days. The young are born in a fur-lined nest in the burrows. They are born blind and hairless. For the first week, young Merriam kangaroo rats crawl, and develop their hind legs in their second or third week. At this time, the young become