Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Photograph of a congenitally deaf white cat. Note the heterochromia of the irides. This particular cat is healthy with no balance deficiencies; only deafness. (Courtesy of Dr. David K. Ryugo, Garvan Institute of Medical Research, Sydney, Australia).
