Of course they do! Dogs loves to eat apples.
Apples are a source of vitamin C, fiber, potassium, calcium and phosphorus which is good for your dog.
They are a great sweet treat for your dog and good for his teeth.
But, still you should give your dog apples in a small slices and small amounts.
The only thing that is not good for your dog are apples seeds which contain cyanide.
So, be sure to remove all seeds before feeding your dog!