So, I've encountered this 3 times now. I have an animal that is level 15 and I select the "Return to Wild" option, but the animal never gets picked up by a helicopter. The first time it happened, he disappeared after I had saved my game and loaded it later on that day. Anyone else have this happen?
P.S. If I select the animal, the "Return to Wild" option is now blacked out. It's like he/she is stuck.