Busy Rats

I am always amazed by how industrious the rats can be at night. We woke up yesterday morning, after a night of tremendous racket, to discover they had renovated their cage. Their litter tray was slid across the cage and jammed under their wheel. The small cardboard box they play in was flipped on top of their food dish and jammed against their water bottle. One small piece of lab block was firmly lodged between two bars of the cage (my guess for that is that they were pushing it out to Parker and it had gotten stuck). The towel from upstairs was downstairs. Their cardboard tube that is usually upstairs was also downstairs. Bedding was everywhere.

Rats are too smart to assume that they do all of this without reason. I just wish I understood what their reason was.

Trouble.