How many nipples do female cats have?

It depends on the species. Most possums of Australia, such as the Ringtail possum, the various Pygmy possums and the six species of gliders, have four nipples. The Brushtail possum has just two nipples in the pouch.

The opossum, which is NOT related to possums, has thirteen nipples arranged in a circular form. There may be as many as 17 nipples.