An extraordinary-looking family, the tenrecs exist only in Madagascar and have a greater diversity of form than any other family of insectivores. Members of the subfamily Tenrecinae look like a cross between a shrew and a hedgehog, with long, pointed snouts and spines amongst their fur. Unusually for tenrecs, the lowland streaked tenrec is active both at night and during the day, and is the only species to form groups. It remains with its family, numbering up to 20 individuals in each burrow.