We reviewed the results today of a surprising survey. Nearly 17,000 children in more than 100 countries were asked about pets. You’d think a dog or a cat, or even a bird, fish or hamster would be the most popular choice. But no. The pet kids wanted most is a rat. That’s right, a rat. A squirrel without a fluffy tail. The bringer of plagues and the bane of your cat. We got some calls.