Habitat:
The Dwarf Hippo is found in the forests and swamps of Liberia, Sierra Leone, Côte d'Ivoire, and possibly Guinea.
The Pygmy Hippo is a subspecies found in the forests and swamps of western Liberia and possibly Guinea.
Size:
The Dwarf Hippo is slightly larger than the Pygmy Hippo.
Adult Dwarf Hippos can reach a length of 1.7-1.8 meters (5.6-5.9 feet) and weigh up to 275 kilograms (606 pounds).
Adult Pygmy Hippos are typically 1.2-1.4 meters (3.9-4.6 feet) long and weigh up to 200 kilograms (441 pounds).
Appearance:
The Dwarf Hippo has a stockier, more muscular build compared to the Pygmy Hippo.
The Pygmy Hippo has a more slender build and a relatively longer tail.
Conservation status:
The Dwarf Hippo is classified as "Vulnerable" by the International Union for Conservation of Nature (IUCN) due to habitat loss, hunting, and the illegal pet trade.
The Pygmy Hippo is not recognized as a distinct subspecies by the IUCN, and is therefore not separately assessed for conservation status.
In summary, the Dwarf Hippo and Pygmy Hippo are closely related subspecies that differ in their habitat, size, appearance, and conservation status.