Cats are known to be creatures of habit.
As such, any change in their feeding, your voice, or play will cause them to be anxious, nervous, or suspicious.
Signs of stress and separation anxiety:
They hover around you. Cats panic, too. They sense if you’re leaving them. But soon as you get home and hear your voice, oh, boy, they’re happier than a dog.
They give you their loudest meow. These felines can miaow with such deep, earthy voices, full of demand and reproach.
They pee or poop outside of their litter box. That’s stress, alright. They undid all you taught them, even as they’re normally the most civil of creatures.
They freak you out with a super large hairball. They get some bald spots from all that nervous cleaning and licking, unless you fed them something that caused their fur to fall out. Dunno really.
They refuse to eat. Cats normally love to eat and they scratch each other over food, too. If they don’t eat, oh my, something’s up. You mispleased them, you betrayed them, or they gagged on something coz they ate too much and couldn’t eat anymore.
How to make sure cat doesn’t suffer from separation anxiety?
Well, treat them like kids.
Leave when they’re asleep.
Then come back with a really huge and fun toy for them.