Allen, 1890 The yellow-pine chipmunk (Neotamias amoenus) is a species of order Rodentia in the family Sciuridae.

[2] These chipmunks are normally found in brush-covered areas, and in California, they inhabit an elevation range of around 975 to 2,900 meters.

The sides of the head each have three dark stripes, with two lighter in between, and the crown is black or smoke gray.

[2] Males and females have similar brain size and roughly the same tail length, ear length from notch, and length of lower tooth row, but females are larger in other body measurements; average body mass varies, with large males weighing an average of 49.7 g and large females averaging 53.5 g.[2] Though male-biased size sexual dimorphism is common among mammals, N. amoenus exhibits female-biased dimorphism.

[3] The average litter number is around four or five and birth occurs late May/early June; in a litter of six, young are smaller, suggesting physical constraints on the mother; the lactation period lasts about 2 months, and by beginning of September, the young are of comparable size to others in the population.