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
An important item in keeping a dog healthy is his diet. The popular idea that a dog is sort of an animated garbage can, capable of subsisting on foraged odds and ends or scraps thrown to him, is extremely erroneous. To be sure some dogs are forced to accommodate themselves to such an existence, but obviously wellbred animals are too delicate to withstand this life for long.
Fisher, Robert K.
"The Dog and His Diet,"
Iowa State University Veterinarian: Vol. 1
, Article 7.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol1/iss2/7