Mountain Rat 
119 
Its nests are often made of material apparently procured 
by shredding gunny sacks, old clothing, and such material 
as it finds about houses. These are often worked into a 
globular form, with a hole at the side for an entrance, and 
make a snug little nest. 
This species has the most pronounced musky odor of 
any of the genus with which I am acquainted, and it is 
FIG 41. NEST OF MOUNTAIN RAT. 
Found on sills under a building, removed to outside and placed 
on steps in same position with respect to the boards as in 
its original location. Composed almost entirely of shredded 
gunny sacks 
E. R. Warren, Photo. 
remarkably persistent, skins of old males which have been 
made up for several years still retaining it in apparently 
its full strength. It is much more persistent than the odor 
