I'd prefer it if Bethesda took prehistoric creatures and twisted them into something unique that fits the Elder Scrolls universe. I mean, the Clannfear is basically a dinosaur, but altered just enough to give it an otherworldly feel.
If we're getting things like mammoths and sabertooth tigers, I hope they don't look exactly like they do in our world. Give the tigers horns or something, but don't go with Oblivion's generic mountain lions and bears.
Granted, the wolves in the screenshots look very unique and interesting, so I'm not too concerned.
U should realize though that the normal stuff is what makes the fantasy stuff so special. If I have a tough fight with a couple of bears, then when I see a couple of minotaurs, i'll be way more freaked out. but i do see what you're saying.
also, idk bout anything before like ice age animals. I think it'd be a little weird to see a t-rex or triceratops or stegosaurus or something. but i could see like a velociraptor type. they could attack in packs of like 4 or 5. that'd be epic.