If you find a dead oppossum with babies in the pouch, please do not remove them from the teats! Just bring the whole thing to the rehabber. The babies are attached much more than with just suction like human babies do. Their jaws are not yet fully ossified and you will likely kill them.

Sooo… New pet?! /s

If you find an opossum (or any wildlife in need of rescue and rehab), you can put your location into https://ahnow.org/ and see a list of local rescues.