Yes peanut butter is goof for dogs in moderation.
You can safely feed your dog a little bit of peanut butter and it will be okay and healthy for the dog to eat.
Just don't feed your dog too much peanut butter as it may cause the dog to get constipated or even sometimes may cause diarrhea.
Also peanut butter can be hard for a dog to swallow and too much peanut butter at a time may stick to the dogs mouth and make it hard for them to move their mouth and swallow the peanut butter.
That can then lead to possible breathing problems.
So if you give your dog some peanut butter just make sure you give them a little bit at a time on the spoon so that they do not choke on it.
I feed my dog some peanut butter once in awhile and he loves it but I only give the dog a little bit of peanut butter at a time.