Bouvier 's red colobus monkeys was last sighted in the Congo during 1970s . The animals were captured by a French expedition and released into the wild after being used as zoo pets for decades.
Bouvier 's red colobus monkeys was last sighted in the Congo during 1970s . Biologists have captured the first ever photographs of the rare primates . The monkeys live in noisy groups in the swampy forests alongside rivers . They are feared to be threatened by growing bushmeat trade in the area .