Sign Language

Any time Roo feels too clean, too well brushed, too dirt-free, she lets me know that it's time for me to find her another mud hole in which to submerge herself, using the communications protocol shown in this photograph. She picks up one of my shoes and either brings it to me or goes and lies down with it. 

If she lies down with it, she puts on the same expression that you would expect a spy satellite to pick up on some lonely castaway wasting away on an island, convinced that her empty life is no longer worth living, morose with self-pity and boredom. You can see in this picture that she's nailed an expression guaranteed to make her employee get back on the job.