The Big-tailed Fox (Vulpes macrourus)
Common.
Timber Wolf (Canis occidentalis)
Very rare, noticed only at Hell Roaring Creek and Slough Creek. On August 25, 1912, Lieut. M. Murray saw two in a meadow two miles southeast of Snow Shoe Cabin on Slough Creek. They were plainly seen in broad daylight; and were nearly white.
Coyote (Canis latrans)
Abundant everywhere, although officially reckoned they numbered only 400 in 1912.
Otter (Lutra canadensis)
Common, particularly around the Lake and the Canyon.
Mink (Lutreola vison energumenos)
Common.