The black-and-white colobus can reach 28 inches in length, not including tails as long as 35 inches. Males can weigh 30 pounds, females can reach 20 pounds. The thumb on this primate is nearly absent. They have a glossy black coat, with a face and rump accented by white hair. Young are born all white, changing color as they age. The point of their noses nearly touches their mouths.
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