One-month-old baby black howler monkey

One-month-old baby black howler monkey and his mother Agra looks out from a tree in the Singapore Zoo on 20 February 2009. Despite the name black howler monkey, only the males are black while females and babies are brown. Young males attain their black pelage upon maturity. This is one of the loudest animals in the New World and the largest monkey that lives in the South American rainforests