The even-toed ungulates have two weight-bearing toes on each foot, and may have lost the other toes entirely (as in antelope), or have another two much smaller toes (as in pigs). Hippopotamuses, camels and giraffes are all Artiodactyls.
Scientific name: Artiodactyla
The shading illustrates the diversity of this group - the darker the colour the greater the number of species. Data provided by WWF's Wildfinder.