Do we know how long any animals or *(non-extremely magical) monsters naturally live?

How long do Kagouti live? What about trolls? Dreugh? Giants? What is the lifecycle of Cliffracers? How many years does it take for a Nix Hound to mature? Can mammoths wander the icey wastes for more than a century?

General creature lifecycles - I would like to know more about them.

As far as I know absolutely no information. Look at the real life equivelant, as far as they exist, and make a guess.

Dreugh (those in the water, anyway) and Giants aren't really animals or monsters. They're intelligent mortals much like the other races. Regardless, I think we have no information on how long any of them live.

I dont think we have any information, there might be a small snippet in some text, but certainly nothing big.