I'm perplexed. The only African animal I can think of that adopts that kind of upright posture of the 2nd animal behind the bug, is the meerkat, but I wasn't aware meerkats hunted anything but bugs, arachnids, and sometimes snakes. So I don't know why a meerkat would be licking its chops over another mammal, and I don't know what that mammal is - given the cartoony style I suppose it could be just about any member of the rodent family.
Then again, maybe the fact that the elephant is stalking a hunting male lion is meant to convince us that the actual behaviors of real animals aren't meant to be depicted... It is a very cute shirt, I love the expressions on the faces.