When hubby and I first moved in together he had a grumpy old tomcat and I had a big pile of black fur that loved everyone and everything. He was never clued in when other cats didn't like him. One day my kitty made the mistake of climbing into tomcat's box. The fury that ensued was unbelievable. Tomcat chose to rip the box to little pieces and I swear it was just so that my kitty would never be able to sit in it again.