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 sunfish to care for, but require small live worms, insects, or crustaceans as food. Most individuals will not eat prepared fish foods. The generic name "Elassoma" derives from the Greek ελάσσων ("elasson") meaning smaller and σώμα ("soma") meaning body, in reference to the fishes' diminutive size compared to the true sunfishes. The currently recognized species in this genus are: Pygmy sunfish Elassoma is a genus of freshwater fish, the only member of family Elassomatidae and suborder Elassomatoidei of order Perciformes. The type species is "E. zonatum," the banded pygmy sunfish. The Elassomatidae are known collectively as pygmy sunfishes, but are not