Fungal spores in the stomach contents and/or feces of 696 Peromyscus spp. showed that about half had eaten fungi: of 486 deer mice (P. maniculatus), 48%; of 160 white-footed mice (P. leucopus), 59%; of 40 canyon mice (P. crinitus), 12%; and of 10 pi ñ on mice (P. truei), 90%.
Maser, Chris and Maser, Zane
"Notes on mycophagy in four species of mice in the genus Peromyscus,"
Great Basin Naturalist: Vol. 47
, Article 17.
Available at: https://scholarsarchive.byu.edu/gbn/vol47/iss2/17