Not related to hedgehogs, they have simply evolved the same method of defense, which is to roll up in a ball so that predators are met with only their outer coat of prickles.
Isolated from many other would-be mammalian competitors in Madagascar for millions of years, the humble tenrec evolved into many different species filling niches commonly occupied by a wider variety of mammals.
Tenrecs hail from the island of Madagascar but can be found in areas on the African mainland as well. They live and forage for food up in the trees, so they are particularly good climbers. They tend to be omnivorous, the largest part of their diets being comprised of invertebrates. Most species are nocturnal; while their eyesight is not that sharp, their other senses are very well developed. Their whiskers are especially sensitive, aiding them as they move around branches and leaves in the dark.
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