The tayra (Eira barbara), also known as the Tolomuco or Perico ligero in Central America, is an omnivorous animal from the weasel family Musteliae. It is the only species in the genus Eira. Tayras have an appearance similar to weasels and martens, growing to a size of about 60 cm, not including a 45 cm long tail. Most tayras have either dark brown or black fur with a lighter patch on its chest. The fur on its head changes to brown or gray as it ages. Tayras grow to weigh around 5 kilograms (11 pounds). The tayra, unlike other Mustelidae, does not have embryonic diapause otherwise known as delayed implantation (this reproductive strategy in other mustelids delays embryonic development and allows the female to delay birth of offspring until environmental factors are favorable). The female gives birth to 2 to 4 altricial, black-coated young.