PRAIRIE DOGS 



Four year 8 experimental study in 

 northern Arizona shored that prairie dogs 

 destroy 60 percent of the wheat grass $ 99 

 percent of the dropseed, and 83 percent of 

 the grama grass, or 80 percent of the 

 total potential annual production of forage* 

 The possible destruction of four-fifths of 

 the forage, or even a far smaller proportion, 

 is serious enough at any time, but in periods 

 of drought it is likely to be calamitous* 



The following pictures show typical 

 prairie dog infestation* 



Prairie dog mounds on abandoned Indian farm, 

 Southern Navajo Reservation* Arizona* 



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