Royal antelope
A herbivore, the royal antelope prefers small quantities of fresh foliage and shoots; fruits and fungi may be taken occasionally. Though the antelope is considered to be nocturnal, zoologist Jonathan Kingdon holds that feeding occurs throughout the day, though some foraging may also be observed at night. In comparison to Bates's pygmy antelope, the royal antelope has a longer muzzle, broader lips, a smaller mouth and smaller cheek muscles. These features do not allow complete digestion of lignified growth. Individuals may often move into new locations foraging for fresh growth.
Texas antelope squirrel
"A. interpres" nests in burrows or in crevices amongst rocks, usually close to bushes or shrubs. Within the United States they are found in western Texas, and in parts of south central New Mexico. They are also found in northern Mexico, including in the Chihuahuan Desert. Because of the wide range of their habitat, they are listed as least concern by the IUCN Red List. While they are commonly found within pockets of the United States, they are common throughout their range within Mexico. Their main threat from humans comes from accidental trapping or poisoning within the United States, although they are eaten in some parts of Mexico.