Microwaves & Cats

It was a long time ago. The stone age people had just invented the microwave.
If you thought the wheel was first, you are wrong.
Also, CATS did not exist yet.
One day, the stone age people (all of them) sat happily around the bonfire, talking about the newest shit, wondering what to do with their freshly invented microwave.
Suddenly, the first cat popped out of an egg next to them. Wow.
 If you had thought the cat was a mammal (Säugetier), you are wrong, too. They are not.
 So what did the stone age people do?
It is logic.
You have a microwave.
You suddenly have a cat.
So you put the cat into the microwave. 
The stone age people were lucky. 
Electricity did not exist yet.
So nothing happend.
Nobody died. 
And they all did: "Uga uga uga"