Ummm... just another thought here... the cat - the one who couldn't care less about you getting home - no chance that cat turns into a mini-dictator when you are not home? You know, "clean a space in the cat-box for me" "bring a nibble from the feeder, I'm too tired to walk" "wipe the toilet seat before I go drink from the bowl"...

No chance fluffy cat is so pleased to see you back because shes sick of being ordered around?

(You know, the way older siblings do to younger ones when parents aren't about)