Ah yes, the notorious Lab Landshark. He looks so innocent in the photo. Unfortunately, pups can be pretty mouthy well up to and beyond the 6 month mark. My favorite method is the "when teeth meet flesh, fun stops" method.
When puppy bites, redirect to a toy and praise for using it. If biting continues, get up and leave. Step over a baby gate, close a door, whatever, just leave the pup for 10 - 15 minutes. Rinse and repeat. If you try a few sessions, and pup will not let up, he probably needs a little time out in his crate and a nap.
This is not an overnight fix. Labs are mouthy dogs and seem to take the longest to lose the play biting. It will take weeks, or months, but the pup's bites will get lighter. He'll stop drawing blood. He'll bite less often. Progress may be slow, but remain consistent and clear. Teeth on flesh = no more fun.
When puppy bites, redirect to a toy and praise for using it. If biting continues, get up and leave. Step over a baby gate, close a door, whatever, just leave the pup for 10 - 15 minutes. Rinse and repeat. If you try a few sessions, and pup will not let up, he probably needs a little time out in his crate and a nap.
This is not an overnight fix. Labs are mouthy dogs and seem to take the longest to lose the play biting. It will take weeks, or months, but the pup's bites will get lighter. He'll stop drawing blood. He'll bite less often. Progress may be slow, but remain consistent and clear. Teeth on flesh = no more fun.