Physical Description
Gunnison’s prairie dogs are 12 to 14 inches (30 to 37 centimeters) in length and have tails that measure 1.25 to 2.25 inches (3 to 6 centimeters). This species weighs from 1.5 to 2.5 lbs (0.5 to 1 kg). On average, males are larger in size than females. Gunnison's prairie dogs have 22 teeth, and five 5 pairs of mammary glands.
The Gunnison’s prairie dog, C. gunnisoni, is the only prairie dog species that has 40 chromosomes. The other four species, black-tailed, white-tailed, Utah, and Mexican prairie dogs, have 50 chromosomes. Their coats are yellow-toned buff merged with black-colored hairs. The upper head, sides of the cheek, and eyebrows are distinctly darker than the rest of the body. Their tails are mostly white with grayish-white ends and the tips are light gray.
The Gunnison’s prairie dogs go through two yearly periodic moults during spring and fall. In spring, the shedding begins from the head to the rear tail. The process is reversed in the winter, it starts from the tail and proceeds to head.
A distinguishing physical trait of the prairie dog is the placement of the eyes. They are situated on the sides of their heads, giving them a wide peripheral range of sight. This allows them to spot predators more easily and react as quickly as possible.
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