The Saci short-tailed opossum (Monodelphis saci), also known as the gnome opossum, is a species of opossum endemic to the rainforests of Brazil.
Characteristics They measure from their nose to the base of the tail. The tail measures . They weigh around . They have a conspicuous reddish head and brown rump and back. The chin, throat, groin and flanks are grayish-brown. There is a distinct central white streak on the chest and abdomen. Their paws are covered with short, light-brown hairs. Males are slightly larger than females.
Distribution They live in the lowland rainforests along the south bank of the Brazilian Amazon.
Behavior Little is known about their behavior because of their very recent discovery.
Etymology They are named after mythical creatures called Saci in Brazilian folklore which wear a red hat to disappear and reappear at will. Scientists named them so because of their reddish-heads and the fact they eluded discovery for so long.
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