Thinking Inside the Box

As long-time cat owners (our practice children), we are very familiar with the compulsion of cats to get into boxes.  Sophie, in particular, would spend much of her life in a box, the smaller the better.  We left this box lying around for the cats to crash in.

We suspect that Benjamin sometimes might think that he is just another member of our cat herd.  The most important evidence for this is his occasional attempts to drink out of the cats' water dish.  So he figured that if the cats like boxes, maybe he'd like it too.

We're not sure which side of the family this behavior comes from.