Okay. This will take a lot of imagination. But, suppose none of us loved our doggies anymore and we turned them out into the wild, to live on their own. Which breed(or mix) do you think would last the longest away from their owners? And which breed would last the shortest time?
I think the German Shepherd would probably last the longest, because they're fast and intelligent. They also have thick fur, but it doesn't get matted or tangled often, which would require human attention.
Sorry to all you Chihuahua lovers, but I don't think they'd last very long. They're so tiny, with short legs, they can't run too fast.