Brookfield Zoo - The 'horns' on Ato's head are actually called ossicones! Both male and female giraffes have ossicones and they are formed from ossified cartilage that has hardened into bony tissue.
Oregon Zoo - Ever wonder about those knobs on a giraffe's head? They're called ossicones, and only giraffes and okapis have them. Unlike horns and antlers, they're made of hardened cartilage and
![Giraffe's horns may act like giant lightning rod that makes them vulnerable to fatal electrocution | Daily Mail Online Giraffe's horns may act like giant lightning rod that makes them vulnerable to fatal electrocution | Daily Mail Online](https://i.dailymail.co.uk/1s/2020/09/17/20/33312212-0-image-a-21_1600369810200.jpg)
Giraffe's horns may act like giant lightning rod that makes them vulnerable to fatal electrocution | Daily Mail Online
![Those funny looking "horns" on a giraffe are called ossicones and are using during combat between males, called "necking". Fights can last up to a half hour and can result in death! Those funny looking "horns" on a giraffe are called ossicones and are using during combat between males, called "necking". Fights can last up to a half hour and can result in death!](https://external-preview.redd.it/51LFLqMg5huzH9w74W2YttDCepjMrpMTODHE-iUQJ5w.jpg?width=640&crop=smart&auto=webp&s=855f9a81f7decc6704aeadcbbda610f39aa5a107)