"A savanna, or savannah, is a grassland ecosystem characterized by the trees being sufficiently small or widely spaced so that the canopy does not close."

Either way is correct.

Then why do I get a red line under the word when I type "savannah"?

For the same reason that I get a red underline if I write colour, favourite or theatre.

American English does not use this spelling and FJ uses an American dictionary.

Ohhh. Thank you.

No problem.

"Thank you for visiting the jungle
We hope you enjoyed your stay
Come back anytime you want
Even on holidays"

It's all Disney's fault

you're right!

its lions asking a waiter what they want to eat

Isn't the waiter asking the lions what they want to eat...?

Dat lesbian lioness.

Guess you could say that's a Waitah...

yeah that was horrible, i know

and I think those trees are only found in Madagascar not the African mainland.

There is one species of Baobab native to mainland Africa, but the ones they drew look more like one of the Madagascar species, yes.