Cartoonists in Cahoots

When an incident of simul-comics happens, I just have to wonder if the cartoonists call each other up and say "okay, we're side-by-side in this newspaper, let's really have some fun, shall we?"

Today's "Mutts" and "Garfield" are so eerily similar (especially the first panel), that it just can't be a coincedence. No way!