The bull shark has more teeth than any other vertebrate. It not only has about 350 teeth at any one time but replaces its teeth constantly throughout life and may go through as many as 35,000 teeth. The toothiest mammal is the long-snouted spinner dolphin with up to 252 teeth.
The African elephant is the animal with the largest teeth. An African elephant has two modified incisors, called tusks, and four molars. Each tusk measures up to 8 feet long and weighs up to 100 pounds or more.
It is unclear which animal has the largest teeth. Hippopotamuses commonly have incisors up to 3 feet long. However, if one considers elephant tusks to be teeth, African elephants would have the largest teeth. The largest known elephant tusk was 11.5 feet long.
Birds do not have teeth or maxillary bones of the jaw like other vertebrates. Instead, they have a pair of mandibles covered by a horny sheath of keratin.
Snails have distinctive teeth called radulae or radulas, which range from a few to thousands. The radula is unique to mollusks such as snails, making these one-piece shell carriers the animals with the greatest number of teeth.
All fish have teeth. The types of teeth fish have depend on the diets they eat. Fish that consume other fish have teeth that are designed to hold and rip prey. Teeth in plant-eating fish are shaped to shred algae and other sea vegetation.
Many animals have ivory teeth, HowStuffWorks explains, most notably elephants, hippopotamuses, walruses and narwhals. Even pigs, sperm whales and killer whales have ivory teeth, although these are not as famous as those of other animals.
According to WebMD, a typical adult dog has 42 teeth, including incisors, canines, premolars and molars. Each jaw has six incisors in the front, one canine at each end of the incisors and eight premolars. The back of the top jaw has four molars, while the bottom jaw has six.
All pigs are born with teeth, which are used for eating and as weapons if necessary. Piglets are born with baby teeth, and their permanent teeth grow in around 1 year of age.
Chickens do not have teeth, but studies have shown that chickens have the genes required to grow teeth. Evolution is likely to be the cause behind chicken's inability to activate tooth development during growth.