(2) a type of dog which was formally known as a "Mutt" or "Mongrel".
Neither, it's a dumbass that paid $1,000 bucks for a mutt that has hip dysplasia.
Can cause cries and gasps of "Soooo cute" from bypassers, retail store personnel and overly friendly salespersons, also usually female but occasionally gay or just trying to make a sale. The astute observer will note the dog's owner basking in the vicarious attention. These cries increase in strength and volume in direct proportion to the number of designer dogs carried, hence many women now sport multiple dogs.
Often dressed for the season or holiday in color-coordinated "cute" outfits and matching fur adornments such as bows. May also sport custom "fur cuts".
Occasionally high strung and nippy, but more often dull and unaware. Yet another way these dogs resemble their owners. Or is it the other way around?