I've recently bought New Vegas on Steam. (My first Fallout game, though I wish I would've been introduced to the series sooner.)

I've played the game on console before, and I've wondered for a while, are there any kind of mods that would add small, passive creatures to the landscape? I would really like to find a mod that adds desert reptiles. (Iguanas, gila monsters, snakes, maybe even chameleons, etc.)

While I try to love Deathclaws in all their giant chameleon goodness, they gnaw my head off too often to be able to appreciate them as wildlife.

I've tried searching, but so far I've only found this type of mod for Fallout 3.