No time at all, I'm sure the three that live here are already plotting to kill the human inhabitants of the household. If they had opposable thumbs, they'd wipe us out. Cats are evil bastards.
1. Cats don't have "owners", they have staff. 2. Cats are regal creatures and would never eat their staff (how gauche) unless absolutely necessary. Necessity being - can't open the cat food, ran out of cat food and are successful at opening a door or window, no one hears their pleas for food (in any octave), they can't get the internet to work, Instacart won't deliver, or they get bored.
According to the Official Cat Book, if a member of a cat's staff doesn't move for a certain period of time (amount to be determined by the cat), the cat may riffle through their pockets (looking for bugs, kitty treats, cash or credit cards - the last two to pay Instacart and Amazon.com).
No time at all. I've always felt that cats have no real loyalty to their humans, unlike dogs. A dog will sit next to a dead owner for a long time. A cat - never.
Archerchef 