* Elephants: Both African and Asian elephants are known for their massive tusks. These are actually modified incisor teeth and can grow to be several feet long!
* Walruses: These large marine mammals have impressive tusks, which are actually their upper canine teeth. They use them for fighting, digging, and pulling themselves onto ice floes.
* Narwhals: These Arctic whales have a single, long, spiraled tusk that is actually a modified left canine tooth. It's not fully understood why they have this unique tusk, but it's thought to be used for display, fighting, or sensing prey.
* Boars: Wild boars, also called wild pigs, have tusks that are their upper canines. They use them for digging, defense, and fighting.
* Warthogs: These African pigs have large tusks that are used for digging, defense, and fighting.
Remember that tusk size and presence can vary between individuals within a species.