Ecosystems in an update

I think we all want life and living mobs in the world, I am not going to begin with the #stopthemobvote because that doesn't lead to anything, I recommend you to make like the ''ZOO update'' in which you can include such a huge variety of animals and mobs, I suppose that means lot of work for you but like these biomes in minecraft will be such better with more exploration and more. I mean that if you can add just 3 animals from the real life in to minecraft in each biome like for example in the savanna, an elephant, vultures, and bison. That will be great, or just maybe in the jungle monkeys or gorillas. Now Minecraft is really cool but when you are playing you always see pigs, sheep, and cows. Like these, you will be able to leave the mob vote to other fictitious animals, but when the Minecraft worlds are already full of real life. In these update you could also include new items apart from animals drops like exploration suits, a sword made up of an elephant horn and things like that. I think that with 3 animals per biome the whole game will change completely, possibly you could update like in parts but announce everyone what is going to change, thanks for reading, I hope you take care of this idea, thanks for everything and for this game. Iñigo