Kittens are cute, but our deepest bonds are with our senior cats. And their numbers are growing, according to Packaged Facts. Its most recent Pet Population and Ownership Trends in the US report says 43 percent of cat parents live with a cat who’s seven or older. Caring for a senior cat isn’t always easy, and more frequent vet visits, medications and special supplements can make it expensive. But according to the Packaged Facts report, many Americans are willing to do almost anything to keep their beloved cats happy and healthy in old age.