Why did my rat make a purring sound?

Question

When I was playing with my rat earlier she was crawling around on my shoulders and she stuck her nose in my hair and it sounded like she was purring.

Answer 1

Without hearing the noise for myself, my best guess is your rat could have been bruxing (grinding her teeth). They do that when they're happy; it's normal.

You should definitely check to make sure she isn't wheezing when she breathes, though. Wheezing is a sign that she could be sick. If you're in doubt, take her to your small animal specialist vet and have her checked out.

Answer 2

she could have been growling or sniffing i guess

Answer 3

did u consider the possibility that she is a cat in disguise? i mean, come on DUH!