animals

cat: kitten
dog: puppy
cow: calf
sheep: lamb
duck: duckling

how about a little lion?

Hello Perfect Stranger,
I believe a baby lion is called a lion cub.

how about a tiger or a puma?

You got me there! I think you can also call them cubs...But I have been wrong before, I might just as well be wrong again. Let'

I think the young of all the "big cats" are called cubs. Here's an adorable puma/cougar cub from Zooborns.com:

http://www.zooborns.com/zooborns/cougar/

For the smaller wild cats that actually have "cat" in their name, like Pallas' cats, Pampas Cats and Fishing Cats, the young are called kittens

khoff: Here's an adorable puma/cougar cub from Zooborns.com:

Thank you for sharing these pictures! I love all kinds of cats! I actually have one at home and I am pretty sure she believes I am her pet.

Agarista I am pretty sure she believes I am her pet.

That's just part of being a cat.
A friend of mine has in his signature something like: In ancient Egypt cats were worshiped as Gods; some cats today think that is still true.