After looking into the totem animals more, there is a huge gap in power between some of the choices. And not just from stats.
Tiger and Bear and Ape are on top in that order, they get three natural attacks and good stats.
Wolf is in the middle. Decent stats but one attack.
Viper and Eagle are on the bottom, they are both just kind of crappy.
If we were playing a higher level game I would never pick wolf, viper, or eagle. There's just no reason to.