ZOOLOGICAL REPORT. 
By Gro. Brrp GRINNELL. 
LIST OF MAMMALS AND BIRDS. 
CHAPTER I. 
MAMMALTS. 
FELIDA. 
1. FELIS CONCOLOR, Linn. 
Mountain Lion; CouGcar. 
Although not a common species, a few of these animals are killed in the mountains every 
winter. 
The skins of the Cougar were formerly imported in large quantities from the east and from 
California for purposes of trade with the Indians. A few years since, a good skin was sometimes 
sold for seven or eight buffalo-robes; but at present they have little or no commercial value. A 
single individual of this species was seen by our party on the Yellowstone River, near the mouth 
of Alum Creek. 
2. LYNX RUFUS, Raf. 
Bay Lynx; WILDGAT. 
Very abundant in the mountains. 
3. LYNX CANADENSIS, Raf. 
CANADA LYNX; CATAMOUNT. 
Not a common species, though taken occasionally. I saw a few skins at Fort Peck, and was 
told that it was sometimes killed in the Yellowstone Park. 
CANIDZ. 
4, CANIS OCCIDENTALIS, Rich. 
GRAY WoLF; TIMBER WOLF. 
Although the Gray Wolf is always killed whenever the opportunity offers, it still exists in con- 
siderable numbers wherever the Buffalo are abundant. On the return march, just before entering 
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