Volunteering at our local Humane Society and caring for a room full of rescued cats is keeping me and my little boys plenty busy and happy this summer. It may also be helping our hearts.

Researchers have found a correlation between cat ownership and a decreased risk of deadly heart disease. While we don't own our very own cat, we do engage in many of the tasks that cat owners practice. And so maybe, if we're lucky and keep at our community service project, we'll enjoy a 40% lower risk of one day dying from a cardiovascular condition.

Caring for cats can make you more energetic and happy, say researchers. I believe it. My seven-year-old is very content while petting, brushing, and loving the cats we visit. And while having any pet companion is good for both physical and emotional health, it seems cats do the trick better than dogs do. Maybe it's because there are more cats owned in the United States -- there are 90 million compared to 74.8 dogs. Makes sense. There are 90 some cats in our Humane Society cat room. There were about 10 dogs last time we visited. Clearly, there's more cat work to be done.

We've got less than two summer weeks left together, my boys and me, and we plan to keep caring for cats. We'll work cat care into our school schedule when the time comes too. It makes our hearts happy -- and hopefully healthy too.