Well she purrs, and dogs do not purr - do they? When I open her crate in the mornings she leaps up on the bed so I do not have to bend down to pet her, and she stands there with her happy morning face and ail going twenty to the dozen, while I pat/rub/stroke her head and twiddle her ears with my right hand and talk to her "did you have a good sleep Tikki?" - my left hand under her lower jaw stroking her throat... ...and she purrs. Quietly. And I can feel the purring in her throat just as I used to be able to feel Kat purring. I think she is a very happy and contented little wubble.