What is a group of cats called?

A group of adult cats is known as a clowder and a group of kittens is known as a kindle.

https://en.wikipedia.org/wiki/Cat

Does anyone use these terms in real life? Apart from pride of lions and school of whales - which sound artificial too - and couple more, these only-found-in-lists group names were invented by Victorians who could have done to get a life. I've been involved in cat breeding (Scottish Folds) and never heard 'kindle' used anywhere. Or 'clowder' which sounds like a soup.... Kittens are found in 'litters' if from the same birth, 'bunches', 'flocks' or whatever takes your fancy if mixed. Source: personal experience....

Baloo -- Grab yourself a nice warm bowl of cam clowder while you check out this book called "A Kindle of Kittens" by Rumer Godden and Lynne Byrnes.

ALSO -- "Clowder" is the correct term for a group of cats. It is an old word for "clutter," an apt name for a gathering of cats that has, perhaps, overrun a farm in response to a plague of mice or rats.

A group of kittens or young cats had a special name: they were called a "kyndyll," or "kindle," of kittens. This is based on the old definition of the verb "to kindle," which described it as "bringing forth" or "giving birth to young." So a kyndyll of cats was simply a group of felines that had, not so long ago, been brought into the world.

http://www.kinrossfolds.com/cattery/catzenglish.html