Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Although rabies in our domesticated animals is not nearly as prevalent as it was a number of years ago, nevertheless during the summer months, cases seem to spring up around the country. All of our domesticated animals are susceptible, but the cases usually appear in cattle and dogs, and more rarely in horses. The spread of the disease is usually brought about by the bite of an infected animal.
Beamer, R. J.
Iowa State University Veterinarian: Vol. 2
, Article 17.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol2/iss2/17