What Nuts Are Toxic To Dogs. Just one macadamia nut can seriously harm your dog. Feeding your dog salted nuts can also lead to water retention and other complications, and some nuts, like almonds, are potential choking hazards.

Your pup would only need to eat a small amount of food containing these nuts to experience negative results. If your dog eats black walnuts, you should contact your veterinarian immediately. Nuts that fall from the trees (like pecans, acorns, etc.) are also subject to mold, which can also be harmful to the dog,” says dr.