The Yellow-pine Chipmunk is from the order Rodentia. The largest group of mammals is the Rodentia. A rough generalisation is most non-flying mammals are rodents. Prairie Dogs, beavers, porcupines and many others are classified as rodents. The Yellow-pine Chipmunk was first reported by J.a. allen, 1890. In general members of this order are found all over the world, except for Antarctica.The Yellow-pine Chipmunk has a single pair of incisors in each jaw. These teeth will grow continually throughout its life. It has a high rate of reproduction, and this is one key factor in attributing to the success of this species.

Ten Facts about Yellow-pine Chipmunk
- Average males measurements are: total length, 209 mm (8.25 in); tail, 90 mm (3.5 in); weight, 51 g (1.80 oz).
- Females average slightly longer, but are significantly heavier than males, with a mean weight of 61 g (2.1 oz).
- Rodents can be herbivorous or omnivorous, and some feed on insects. Others are known to be partially carnivorous.
- It arises shortly after the sun, being active for the first few hours, then disappearing from about 9 am to 3 pm.
- Yellow-pine Chipmunks eat a variety of corms, fruits and seeds, including those of Ponderosa Pine, Douglas-fir, larch, knotweed, huckleberry, yarrow, thistle, grass and sedge.
- Mating occurs shortly after the females emerge. Sometime between mid May and early June four to eight (average six) blind young are born.
- Young open their eyes at about day 31 and are fully weaned about day 42. They first appear above ground in late June.
- Sexual maturity is reached the next spring.
- They range in elevation from 750 to 1830 m (2,500 to 6,000 ft).
- Its fur is more orange or rust-coloured rather than the grey of the Least's.










