Here at the Petfinder Foundation, we’ve given millions of dollars in vaccination grants to animal shelters and rescue groups. That means thousands of pets — including the adorable Casey, pictured here — have been protected from the communicable diseases so common in shelters. Casey was adopted from Ark-Valley Humane Society …

Rocky is available for adoption at the Teller County Regional Animal Shelter in Divide, CO. Dr. Lauren Brickman writes a pet health and care column for Petside.com. Read all the Q&As she’s shared with Petfinder here. Q: I have recently heard that annual vaccinations in older cats may cause cancer. …