E is for Elasmotherum. That most cranky, cranky of unicorns. Good luck poaching that horn.
Here's a prehistoric critter in something resembling Mickey Mouse comic artist Floyd Gottfredson's style from the '30s. I guess it's one of my favorite cartoon styles even if I still need practice with it. Also, isn't it strange that I haven't done any anthros yet this Inktober? :-o