Of course it didn’t. He’s not a dog at all, and he’s purring, not growling: a long soft rumble with a realistic vibration along with it. (The core picture includes notes on the armature update required to make this happen.).
Now he has a permanent home in the studio, but a few other vibrating houses survive. You can write to the Salamander if you’d like to discuss the creation of a cuddly desk-friend for yourself.