Re-reading the Infernal City again. I have one thing to say. Were-Crocodiles do exist. Judging from Mere-Glim's personality, he doesn't adventure enough to find one...
Wasn't it confirmed in that book?
Wereboars in Hammerfell and High Rock
Werelions in Cyrodiil, Black Marsh, and Elsweyr.
Werewolves everywhere.
Werevultures in Valenwood
Werecrocodiles in Black Marsh, Morrowind, and Elsweyr.
Weresharks (possibly) in the sea.
The first 5, the author of http://www.uesp.net/wiki/Lore:On_Lycanthropy, seemed certain about, Weresharks... not so much.