They are very similar to Earth deer, are known to be herbivorous, and may be ruminant, having been observed regurgitating their food. The deer have a light blue spot along the back, head and stomach. The deer are hunted by a predator on their planet and are not only edible for humans, but also apparently flavorful. They also have small horns on their heads and along their backs.
In 2010, when a group of the Destiny expedition explored planet one in search of edible plants and plants with medicinal properties, Lt. Matthew Scott uses a kino and sees the two space deer eating. At least one of them was killed by MSgt. Ronald Greer and later barbequed for Destiny expedition. (SGU: "The Hunt")