I've begun preliminary work (ideas and texturing) on a lore-centered creature mod for Oblivion, which will strive to bring in some of the weirdness and diversity of the 1st edition PGE while remaining consistent with Oblivion's environments and visual tone. However, the PGE is a little limited on specifics when it comes to critters, so I'm turning to you Lore-khans to provide suggestions and/or input.

The mod will be based on the vanilla leveled lists, as the distribution already creates a http://images.uesp.net/7/7c/OB-Map-OutdoorsCreatures.jpg (and to ensure maximum compatibility with stuff like the Unique Landscapes and village mods). So, http://i.imgur.com/c7nOv.png in terms of ideas, and here's the creatures that are finalilzed (based on community resources with edited textures):

http://i.imgur.com/ZlpTx.png- Though the blood of Morihaus has grown thinner and thinner with each generation, resulting in the bestial minotaurs that roam the highlands of Colovia, tribes of noble moritaurs can still be found on occasion around the Nibenay Basin.
http://i.imgur.com/6Zo8E.png- Common throughout the waterways of Nibenay, these creatures can often be seen sunning their hides in Lake Rumare or hunting its native slaughterfish.

I also plan on adding a few wild elf camps around some of the obscure Ayleid ruins (read: non quest-related).

I'm mainly looking for help with ideas for new creatures, interesting/lorefriendly names for creatures I'm already adding (the ones with WIP names should be pretty obvious), or any other lore suggestions you can think of (books, ingredients, whatever).

I would suggest a kind of river newt or lizard as the source of the Morrowind Imperial Newtscale armor - as a matter of fact I believe a creature like this is already present in the Project: Cyrodiil database (a Morrowind province mod). Maybe you could talk to those people, see what kind of creatures they have planned.