( Did you look at the giant rats in New Vegas and think "my god, that's so cute, can one be my friend"?
Well, I did anyway. Now however many years later, I've made a mod for it! )

Dawley is a friendly and intelligent giant rat that would love to accompany the Courier on all their adventures.
Freeside is a bit rough on giant rats, you know. Hungry children and all that.

Dawley works with the companion wheel, and she provides her own companion perk. Her perk, Lab Rat, gives
the Courier one extra skill point each time they level up. Additionally, if you ever find yourself trapped in a swarm
of giant rats, you still won't have a hard time picking her out of the fray. Unlike your average rat, Dawley is albino,
just like the strain of Pre-War lab rats she's named after (in other words, she has a custom texture)!

You can find her at the end of the street that Silver Rush and the Atomic Wrangler are on in Freeside.
In the images tab I've included a picture so you can see more clearly.

( This is the first mod I've made, so I hope it works okay! Enjoy. :D )