Mutt

"Mutts are sweet and kind Petz that love to play fetch with you!" The Mutt is a breed of dog that first appeared in Dogz. They were first known as Scrappy, and importing a Scrappy into Petz II will give you a Mutt.

Dogz
"Scrappies, a terrier-like breed, will do anything to convince you to pet them. And believe me, they know how to give you the eyes."  - Dogz 

Dogz II
"Dogz of the Mutt breed are lovable, energetic mixed-breed Dogz who love to play with everything and everybody - although they are particularly fond of playing ball. Your Mutt will learn tricks with ease and will often perform them just for fun. You won't have to worry about your Mutt getting along with your other Petz, Dogz of this breed will make friends with most Dogz and even Catz on screen! Mutts are also very loyal and will be quick to come when you call." - Petz.com "Mutts have the best features of all Breedz! Dogz of the Mutt breed get along with other Dogz, learn tricks easily, are loyal, loveable, and come quickly when called."  - Dogz 3 

Appearance
Mutts with no patches appear 1.2% of the time, and the chance of getting a Mutt with the maximum 9 patches is 0.006%.