Puppy biting older dog's fur: Is this normal and should I stop it?

Yes, this is normal puppy play. Try not to get him riled up to the point where he is biting and growling. If he starts, stop play until he settles down. It is up to you to teach him what is appropriate behavior and what is not. If he bites hard, a stern "No!" Shouls stop/distract him. Offer an appropriate item to chew. Praise and reward rewatd him when he complies. If he doesn't, stop all interaction until he settles down. Be firm and be consistent.

Hi there! I can't say for sure if your dogs are playing or not without observing them - but in general, I can tell you that it's very normal for dogs to "fake" bite each other during play. Biting and mouthing, wrestling, and chase games are all normal ways that dogs play with each other. As long as neither dog seems afraid of the other one and both are actively participating, it's likely that this is play. If you're unsure, you can always try to get in touch with a good reward-based trainer in your area who can observe the dogs in person and give you a more definite opinion.

As long as he isn't actually hurting the puppy, I would let them alone to work out their hierarchy. The Westie is probably letting him know that he's top dog. Don't leave them alone together yet, until you're sure they are getting along. There is probably some play involved, but they're going to have to establish their pecking order. If the westie starts injuring the puppy, you will have to separate them unless they are directly supervised.

If they are playing to the point of causing cuts and scratches, and you feel it is too rough, I'd definitely instill some "time out" time where both dogs can relax, rest, and maybe focus on a chew toy or quiet activity. Once they are calm, you can let them resume play. Normal play can be a little rough, and if the dogs are enjoying it, it's fine. You may also want to trim back their nails or file down the nails to make them softer to help avoid scratches while playing.

This is how puppies learn bite inhibition and this is important for the rest of their lives. I don't recommend to step in unless you notice one puppy getting too worked up. If that happens, but separate the puppy for 30 minutes to calm down. I hope this helps.

This is indeed common in puppies (and some adult dogs). When Julius gets riled up or too excited, stop all play until he calms down. If he bites, a stern "No" or "No bite" should get him to stop. Praise and reward him when he complies. Be firm and be consistent.

Thank you for submitting your question regarding Pip. From the pictures, her behavior appears playful. Puppies will commonly nip and mouth around the necks and muzzles of adult dogs. As long as her tail is wagging and she is not forcefully growly, then I suspect this is normal play behavior. You can always enroll her in puppy classes as this will help her socialization and to learn how to appropriately play with other dogs. I hope this information helps!