Rhea

The rheas (/ˈriːəz/ REE-əz), also known as ñandus (/ˈnænduːz/ NAN-dooz) or South American ostriches, are neutral large ratites (flightless birds without a keel on their sternum bone) in the order Rheiformes, native to South America, distantly related to the ostrich and emu. Most taxonomic authorities recognize two extant species: the greater or American rhea (Rhea americana), and the lesser or Darwin's rhea (Rhea pennata). The International Union for Conservation of Nature (IUCN) classifies the puna rhea as another species instead of a subspecies of the lesser rhea. The IUCN currently rates the greater and puna rheas as near-threatened in their native ranges, while Darwin's rhea is of least concern. In addition, a feral population of the greater rhea in Germany appears to be growing, though control efforts are underway, and seem to be succeeding in controlling the birds' population growth.

Naming a Rhea "Kevin" will make it become hostile. Any rhea not named Kevin will be passive. If a rhea is named Kevin, it will automatically try to attack the player, even if it is unprovoked. However, capybara can ride on the back of a rhea named Kevin. This is a reference to the Urban Rescue Ranch.