I've done this with Beavers and Moose. However, I don't like doing it so much. Alot of times i have Savvanah Zoos with just savvanah animals, because I loves them! Lol. I have a big zoo with almost all of the savvanah animals, except for like, 2, and I speicalize in cheetah breeding. I've got 9 generations so far! Lol. I had one who had 8 total cubs, instead of like, 6, like most of the others. It was really cool. (Tip, though, If you want 8 cubs per female, remove them after they nurse, and put them into a cage with another nursing female. That way the female will get pregnant really soon again. It's cruel, yes, but I get more cubs that way)