The toothed leaf chameleon is endemic to northwestern Madagascar, and its type locality is Suberbieville (Maevatanana).

The International Union for Conservation of Nature has classed B. dentata as an endangered species on their IUCN Red List.

The habitat of Brookesia dentata is continuing to decline due to charcoal collection, fires, and cattle.

[1] It is currently protected under the Madagascar law, and collection of the species is permitted with permission to do so.

[1] Brookesia dentata was initially described by Mocquard in 1900: 345, and has later been described many times: Werner (1911: 43), Mertens (1966: 2), Brygoo (1978: 25), Glaw and Vences (1994: 235), Klaver and Böhme (1997), Necas (1999: 277), and most recently Townsend et al.