Sloths are solitary animals that only come together for mating, during March or April. A male attracts a female by marking an area with his scent. Approximately six months after conception, the female gives birth to a single baby, while she hangs upside down. The baby crawls out and clings right-side-up to her belly. The newborn is approximately 10 inches (25 cm) long and weighs about 12 ounces (340 g). At 20 to 25 days, the young sloth will begin to hang upside down, and will nurse for approximately 75 days, after which it begins to eat the same vegetation as the mother. The youngster can cling onto tree branches by six months and by eight to nine months can fend for itself, although many mothers and offspring stay together for two or more years after the birth. Sexual maturity is reached at three and a half years for females, and five years for males.