some dogs can get up to six feet on heind legs 100 pounds
no.
They dont exactly attack smaller dogs they just can get jelious. if their is someone petting a small dog, the bigger dog can get mad that their not getting the attention so they go after the dog that...
Oh yes, and some funny looking dogs can be the result. I knew a family that had a 1/2 lab ans 1/2 dachshund. It had a lab body with short legs.
a dog of course!!!!