Seems like alot of ungulates. I mean, they would be wonderful to have but currently, I think we need more animals that are completely different to what we already have. Penguins, sea lions, marsupials (kangaaroo, koala, tas. devil...), fennec foxes, some kind of badger, wolwerine, capybara, beaver, otter, porcupine, sloths, meerkats, gibbons... Yes most of these would need new rig or new game mechanics, but I think these animals are more important to have than another ungulates.
For now of course, there are many ungulates I would like to see, but I would give the priority to unique animal types first.