Females have a single pair of mammary glands. The eat fruits, leaves, stems, sprouts, small branches, grasses, aquatic plants, tree bark, aquatic organisms, and cane, melon, cocoa, rice, and corn from plantations. Reproduction Estrous occurs at intervals of 50 to 80 days and lasts two days. Mates attract by producing squealing and clicking calls. They mates do not stay together long.
Copulation occurs in or outside of water.
Gestation ranges from 335 to 439 days. Twins have been observed, but usually one young is born. Growth is completed at 18 months. Captive females have reached sexual maturity in 23 months. The oldest known breeding individual, a captive, was bred at 28 years.