How can I get my puppy to stop biting everyone?

I have a precious black mouth curr/yellow lab mix. She’ll be 5 months old on August 13th.

She’s a HUGE puppy an she has already surpassed my other dogs in both height an weight. She kinda looks like Marmaduke.

Although she is sweet and energetic, I can’t seem to get her to stop biting everyone. I know she thinks she is just playing, but I have tried and tried to reverse that behavior.

I don’t want to resort to swatting her bottom or anything, but the biting is getting very troublesome. I know that she doesn’t mean anything by it, but she is a very large dog and doesn’t realized how bad it can hurt.

I know that the black mouth curr breed is mainly used for herding cattle, so they are trained to bite at the ankles and herd things. I’m afraid it is just a part of her nature that I can’t reverse.

Any ideas, Fluther? I don’t want to have to get rid of her if she accidentally bites the wrong person one day, nor do I want to lock her up when people are over.