Every day, go to each of the above sites and answer a trivia question. Whether you’re right or wrong, the site will donate 10 pieces of kibble to hungry animals, and you get to feel really good (or really horrible) about how much you (might not) know. They feed millions of dogs and cats while you answer a daily question and move on with your activities. It’s awesome!
Another great site that feeds hungry animals is The Animal Rescue Site. If you also care about hungry kids, literacy, breast cancer, the rainforest, and child health care, you can navigate around that site and click the big buttons to give for free too. These ones let you click more than once a day. It’s a pretty good deal, since you don’t really have to do anything extraordinary, but you’re helping the ones who need it.