Peanuts are safe for dogs in small quantities. They must be unsalted and unseasoned.
Treat your dog with natural peanut butter. Check the label to avoid artificial preservatives, salt, and sugar.
In small amounts, cashews are also safe for dogs. This nut is high in fat, so it is not a good idea to treat your furry friend regularly with cashews.
Without their shells, pistachios are ok for dogs. Pistachios are not toxic to dogs but contain a high quantity of fats that can cause obesity in dogs.
Walnuts are too high in fat for dogs, and tend to be larger than other nuts such as peanuts, pistachios, or cashews, and they can be hard to digest.