They are divided into 3 groups:
* Procavia (Rock hyrax)
* Heterohyrax (Bush hyrax)
* Dendrohyrax (Tree hyrax)
They have poorly developed internal temperature regulation
Their 2 upper incisors are tusk-like and large
Their lower incisors are deeply grooved
They have complex, multichambered stomachs
Heterohyrax
Dendrohyrax
Procavia