MAMMALS VERSUS OTHER MAMMALS 



destroy large numbers of mice, chipmunks and other rodents. 12 Skunks 

 kill many mice, gophers and other small mammals, and even rabbits. 18 

 The fisher and pine marten also feed largely upon small rodents. 14 The 

 wolverene is more ambitious. In addition to taking many of the smaller 

 mammals, there are accounts of its attacking those much larger than 

 itself, such as moose and caribou. 15 Squirrels sometimes eat smaller 

 mammals. A Franklin ground squirrel attacked and ate a young rabbit 

 and another was seen chasing a striped ground squirrel. 16 



Although shrews are chiefly insectivorous, they are fond of meat 

 and some species destroy mice of various kinds. 17 There is an account 

 of a rat eating a mole. 18 Grasshopper mice kill and eat a great many 

 injurious mice of various species. 19 



"Bailey, Farmers' Bull., No. 335, p. 30, 1908; N. Amer. Fauna, No. 49, pp. 166, 

 169. 170, 1926. Carey, ibid., No. 33, p. 186, 1911. Howell, ibid., No. 45, p. 35, 1921. 



13 Merriam, N. Amer. Fauna, No. 3, p. 83, 1890. Howell, ibid., No. 20, p. n, 1901; 

 No. 26, p. 8, 1906; No. 45, 1921. Bailey, Farmers' Bull, No. 335, p. 28, 1908. Lantz, 

 ibid., No. 587, 1914. Cuyler, Journ. Mammalogy, v, 180-189, 1924. Dixon, ibid. t vi, 

 34-46, 1925. 



'Bailey, N. Amer. Fauna, No. 49, pp. 176-177, 1926. 



15 Keele, Forest and Stream, LXXI, 971. Hunter, Canadian Indian wilds, p. 150, 

 1907. Grinnell, Journ. Mammalogy, I, 182-185, 1919. 



16 Johnson, Journ. Mammalogy, in, 187, 1922. 



17 Howell, TV. Amer. Fauna, No. 45, p. 21, 1921. 



ls Garrett, Rat-eating mole, The Field (London), vol. 148, p. 205, 1926; cited in 

 Journ. Mammalogy, vii, 340, 1927. 



"Bailey and Sperry, U. S. Dept. Agric. Technical Bull, No. 145, 1929. 



