What is a “Hard Eye” in a Dog? (And What Should You Do When You See One?) Great article by Patricia B. McConnell, PhD, CAAB Read it here: http://www.patriciamcconnell.com/theotherendoftheleash/what-is-a-hard-eye-in-a-dog-and-what-should-you-do-when-you-see-one#sthash.bdOk5hjN.dpuf