Eight weeks old is often too early to separate a pup from its mother and littermates. There is critical socialization training that happens at this time. The pups bite mom, and she bites them back. They bite each other, and learn that it friggin' hurts and not to do that.
I have a beagle who was, I believe, from a puppy mill. Got him at 8 weeks old, with his littermate brother. The brother's behavior is fine. But the 1st pup still (at 12 years old) suckles on a corner of his dog bed, never learned how to play (still thinks it's fighting), and can be unpredictable to snap or bite when startled.
I won't let him go to a different home, as I doubt anyone else would understand his psychotic behavior and he would be abused or injure someone. I keep him locked in the kennel when rambunctious children are present.
I have a beagle who was, I believe, from a puppy mill. Got him at 8 weeks old, with his littermate brother. The brother's behavior is fine. But the 1st pup still (at 12 years old) suckles on a corner of his dog bed, never learned how to play (still thinks it's fighting), and can be unpredictable to snap or bite when startled.
I won't let him go to a different home, as I doubt anyone else would understand his psychotic behavior and he would be abused or injure someone. I keep him locked in the kennel when rambunctious children are present.