There are a lot of things pet owners should not assume. One of them is that just because you cleaned the kitchen table after breakfast it's clean enough to eat lunch at (after removing all the junk you piled onto it, of course):
Mr. Neelix is just enjoying all the lovely heat from that radiator since Ms. Tabitha is hogging the most sun-heated spot in the rig.
"Life's but a walking shadow, a poor player that struts and frets his hour upon the stage and then is heard no more. It is a tale told by an idiot, full of sound and fury, signifying nothing."