Pygmy hippopotamus occur. The common hippopotamus gives birth and mates only in the water, but pygmy hippos mate and give birth on both land and water. Young pygmy hippos can swim almost immediately. At birth, pygmy hippos weigh 4.5–6.2 kg (9.9–13.7 lb) with males weighing about 0.25 kg (0.55 lb) more than females. Pygmy hippos are fully weaned between six and eight months of age; before weaning they do not accompany their mother when she leaves the water to forage, but instead hide in the water by themselves. The mother returns to the hiding spot about three times a day and calls
Pygmy hog small reptiles. The species was first described as the only member of the genus "Porcula", by Brian Houghton Hodgson but was later moved with other pig species in the genus "Sus" and named "Sus salvanius". A 2007 genetic analysis of the variation in a large section of mitochondrial DNA suggested that the original classification of the pygmy hog as a distinct genus was justified. The resurrection of the original genus status and the species name "Porcula salvania" has been adopted by GenBank. The species name "salvania" is after the sal forests where it was found. The pygmy hog is the