I'm looking for mangas were animals rules a kingdom, the world, or even a simple forest. Of course I don’t want humans on this world, our at last they can’t be numerous.

For example take Doubutsu no Kuni, Gon and Crimsons: Akai Koukaishatachi.

I don't want
-Yaoi
-Yuri
-Shounen-ai
-Shoujo-ai
-Smut
-Gender Bender
-4-Koma
-Harem
-Ecchi (It's ok if it is not the focus of the manga)
-Hentai
-Gag (Light comedy is ok)
-Romance

School In The Wild comes to mind, I havent seen a single human yet, although the animals take the form of a human from time to time, does this count?

If they are still animals i think it's ok

Still looking for mangas

Kemono Kingdom: Zoo I think this fits what you're looking for

Thanks, i will give it a try

This is not what you asked for, but there's a surprising amount of animal trivia in Killing Bites that I found interesting and relevant to your initial request. Thought you might be interested.