In the 10 undocumented years I've been watching Stony Point Penguin Colony Camera Stony Point Nature Reserve, South Africa these cute critters are a common sight on the rocks of Stony Point and rather fun to watch.
Hyraxes use grunts, wails, squeals, snorts, twitters, growls, whistles, and shrieks to communicate. They vocalize to contact groups in different locations, just like we might play a game of Marco Polo in the swimming pool: one calls out and another calls back.
The rock hyrax shares an ancestor with the elephant and has similar teeth, toes, and skull structure to that of an elephant. It has strong molars, which it uses to eat tough vegetation, and two large incisor teeth that grow out to be tiny tusks, just like an elephant.
https://en.wikipedia.org/wiki/Rock_hyrax