I made a big mistake while trying to tame one of these. Don't go into water! They don't, but they can walk faster than you can swim. If you upgrade your speed like a lot then you might be able to, but don't try it.
I just feel bad for these dinos. They try so hard to fight anything that hurts them but in the end they always end up dying. I once saw one trying to take on four raptors. That fight didn't last very long.