Can dogs have horns? - briefly
No, dogs cannot have horns. Horns are unique to certain species like cattle and goats, not canines.
Can dogs have horns? - in detail
Dogs, as mammals, do not naturally possess horns or any similar appendages. Horns are typically associated with certain species of ungulates, such as cattle, sheep, goats, and antelopes, which are all members of the order Artiodactyla. These animals have keratinous growths on their heads that are classified as true horns. Canines, including dogs, belong to the order Carnivora, and do not exhibit this trait.
However, there are a few exceptional cases where dogs may appear to have horns due to genetic abnormalities or medical conditions. One such condition is known as cutaneous horns, which can occur in various species, including dogs. Cutaneous horns are cone-shaped growths that protrude from the skin and are composed of compacted keratin. They can develop due to irritation, infection, or certain types of tumors. While these growths may resemble horns, they do not serve the same purpose as true horns in ungulates.
In rare cases, dogs may also exhibit what appears to be a "horn" as a result of a condition called aural hematoma. This occurs when blood pools between the skin and cartilage of the ear, causing a swelling that can resemble a small horn-like growth. This condition is typically treated by a veterinarian through drainage or surgery.
In summary, dogs do not naturally have horns like some ungulates do. Any apparent "horns" on a dog are likely due to medical conditions such as cutaneous horns or aural hematomas, which should be evaluated and treated by a veterinary professional.