Black tailed tree rat

Introduction: The camelthorn tree is the favourite living quarters of the black-tailed tree rat (Thallomys nigricauda) one of only 2 species of tree rats found in Namibia. Groups of two to eight nest in holes and cracks in and between the main stems of trees. A mass of untidy twigs, grasses and leaves are often assembled to protect the entrance to the hole.

Predators include snakes such as the Cape cobra which find their way into the nest during the day. Owls follow suit but at dusk and black-tailed rats will escape out of any hole, falling to the ground or darting to higher branches to safety.

Distribution: The Kalahari sandveld in eastern Namibia and in the Central Highlands including Etosha National Park.

Diet: A herbivore, it eats young leaves, buds and the bark and pods of Acacia trees and occasionally insects. Water is obtained from food and is not dependent on drinking water.

Colouring: Brown upper body with white underparts and a black tail with a developed black face mask.

Breeding: A breeding pair will produce 2-5 pups in summer. Young survive sudden attacks by clinging to the mother's nipples as she makes her escape.

Size: Average body length males 270-340mm, females 275-325mm.

Weight: 100-190g. Both male and female have black tails longer than the head and the body.