tubulidentates
Tubulidentates are a group of placental mammals belonging to the order Tubulidentata. The sole living species within this order is the aardvark (Orycteropus afer). Aardvarks are native to Africa and are characterized by their distinctive pig-like snout, powerful claws, and long, sticky tongue, all of which are adaptations for their diet of ants and termites. The name Tubulidentata refers to the unique structure of their teeth, which are composed of many thin, parallel tubes of dentine. These teeth lack a pulp cavity and are continuously worn down and replaced. Aardvarks are solitary and primarily nocturnal, spending their days in burrows they excavate themselves or have taken over from other animals. They are known for their strong digging abilities, using their claws to unearth insect colonies and create extensive burrow systems that provide shelter from predators and the heat. Their thick skin and sparse hair offer protection from insect bites. Despite their unique characteristics, aardvarks are not closely related to pigs or anteaters, though they share some superficial similarities due to convergent evolution. Their evolutionary lineage is somewhat enigmatic, with their closest relatives still a subject of ongoing research.