Is it normal for dogs to engage in masturbation behavior, and what are some ways to address or prevent it as a responsible dog owner?

Yes, it is normal for dogs to engage in masturbation behavior. As a responsible dog owner, you can address or prevent this behavior by providing enough physical and mental stimulation, ensuring they are spayed or neutered, redirecting their focus with toys or activities, and seeking advice from a veterinarian or animal behaviorist if the behavior persists.