How do possums breed?

They mate like most mammals, not through the nose like some people believe. The male has a forked penis and the female has two vaginae. They only mate one time a year yet the female will deliver two litters throughout the year. This is due to one of the pregnancies being delayed.

Only the honey possum has embryonic diapause as described above. Most possum species do not have this "delayed" pregnancy, and most possums may give birth once or twice a year.