...you have more dog beds, chew toys, collars, leashes, harnesses, and dog crates than you have dogs.

...you meet other people with dogs, and remember their dog's name within 30 seconds, but don't get the owner's name until you've met them 2 or 3 times.

...you don't think twice about trading licks of an ice cream cone with your dog.

That's all I can think of right now..