The width is generally 50-60 mm. In Ohio, the only other rodent skull that is larger is that of the beaver. The woodchuck's post orbital processes are large and sharply pointed, almost forming a post orbital bar. Unlike other Sciurids, the skull is flattened with a straight rather than rounded profile. The incisors are white or pale yellow and do not have the characteristic brown pigment of most rodents.
Woodchucks do, however, have the continuously growing incisors characteristic of rodents.
There have been several documented cases of pebbles being lodged between the incisors and causing off-lining to occur. If starvation does not cause death first, the teeth will continue to grow and curve around up into the skull, killing the woodchuck. DIET Woodchucks are primarily herbivorous, with a diet consisting of green vegetation. They can consume over 5 kg of green plants a day, such as alfalfa, clover, grasses, herbs, apples, peas, corn, other fruits, and the bark of trees. Females mate only once, but males are promiscuous.