Today's Restricted and Stereotyped Interest is brought to you by the letter A and the number 7

Which, by the way, are my favourite letter and number, because they are pointy (I love sharp angles, and because 7 can be represented this way
.,. , .,. - Two identical, symmetrical groups on either side of one thing.

But anyway, today's and last nights fixation is collective nouns. Collective nouns are the coolest thing in the world.
For instance, did you know that a group of crows is called a murder?
Groups of bats, ants and termites are all known as colonies. A group of ants can also be known as an army.
We have a school of fish, a pod of whales, a fleet or an armada of ships.
Bees are grouped into a hive or a swarm depending on how they are behaving at the time.
I'm not sure about humans, but I think a good term would be an annoyance of humans.
A group of lions is a pride. I suggested last night that a group of cats should be called a miracle or a battle. My brother suggested "a temporary alliance of cats.
I have just looked up cats, and found many terms
clowder of cats
clutter of cats
glaring of cats
pounce of cats
dout of cats (house cats)
nuisance of cats (house cats)
kendle of cats (kittens)
kindle of cats (kittens)
litter of cats (kittens)
destruction of cats (wild cats)
Some of those are very appropriate. Some reflect the attitudes of some people toward cats. And there are a couple of new words there for me to look up.

A sounder of boar, thats a good one.
A cartload of chimpanzees.
Crows can also be called a storytelling.
An implausibility of gnus: that is so cool!
A prickle of hedgehogs, that one made me smile.
Go here for more collective nouns.