Yes in small portions due to their nutritious value but be very careful with avocados and consult with your vet if you decide to feed it to your dog. They contain persin, a fungicidal toxin that can be dangerous to dogs. Most of the persin is found in the leaves, skin, and the pit of the fruit.
CAUTION: Watch out for vomiting, diarrhea, and stomach pain that may be caused by Persin.