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
There is always a demand for a new anesthetic agent and technique. This is especially so for those animals that are less tractable and those that do not have accessible veins. One can satisfactorily restrain a horse, a cow, or a dog to administer an anesthetic intravenously. Veins in these animals are easily accessible. The cat is more difficult to restrain and the veins are quite small. The Chinchilla is not difficult to handle but it certainly is extremely difficult to make an intravenous injection in these animals. The ear vein is the most suitable, but most practitioners find it impossible to make a vena puncture.
"Studies of Pentobaritol Anesthesia in the Chinchilla,"
Iowa State University Veterinarian: Vol. 18
, Article 4.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol18/iss1/4