Yes, you can give your dog PB. And about how much you can safely give, it depends on how much your dog can enjoy it.  Unfortunately, most pet owners do not measure their pets’ calories. If you feed your dog peanut butter, measure and ensure it does not constitute more than 10% of its everyday food requirements.   This equals about half a tablespoon for small dogs and a full or slightly more tablespoon of peanut butter for larger dogs. And it is always better if your peanut butter contains only peanuts, as it means the PB contains no xylitol.