He is known to camp out in 3 locations: The more empty shelves of his owners' bookcases, his "hovel" (an empty bottom of a nightstand, meant for magazines and folded blankets), or his "cubby" (a space under a bookshelf desk-topper). He is usually more friendly while in the hovel, but if bothered in excess while in the cubby, he is known to viciously bite, scratch, and hiss, if not in a specific playful or sleepy mood. As of August 2018, his cubby has been filled with various sorting materials for Lego Technic pieces, and subsequently shut down.
On Thursday, March 29th, 2018, Muggy went missing, somehow sneaking out a 2-story high window. In his 24 hours roaming the streets, he was witnessed fighting with brutal alleycats. The next morning, he was discovered to have been hiding in an actual hovel in a neighboring house's foundation, where skunks and alleycats are known to dwell. It is supposed he had a cold, foodless night as he does not appear competent enough to catch any rats for his own consumption.