A boy and his...cat???

Gavin has mentioned a couple of times recently that he thinks we should have a pet. The other day at the dinner table he brought it up again, telling us that we don't have any pets and that we should get a dog. I launched into a long story about all the things you have to do with a dog (take him for a walk even if it's cold or rainy, clean up his business, etc, etc). When I was finished, he sat there and looked contemplative for a moment.

"What do you do with cats?" he wanted to know. :)