In a world where the Quaternary extinction event never happened, the majority of the fauna and megafauna (including, but not limited to mammoths, mastodons, saber-toothed cats, ground sloths, etc) a

In an alternate timeline, albeit an exhilarating one, the Quaternary extinction event does not transpire. The Earth is lush, covered with the vast and dense forests, which are not just home to tiny birds, small animals, and plant species, but also to the megafauna - giants that once roamed the Earth. Presume walking down a bustling city street, not too different from our own, shimmering skyscrapers touching the sky, shops are resounding with the echo of barter, cars moving to and fro. But then, a medieval-like cry fills the air - "Clear the streets! The mammoths are coming!" The familiar, yet alien, sight of elephants now replaced with hulking mammoths, their towering figure parting the crowds as they lumber down the main roads. Specialized lanes and stop signals control their movement, coexistence instead of extinction is the motto of this world. Mastodons, like mammoths, have been domesticated, employed in the construction industry because of their inordinate size and strength. 'Mastodon-riding' is the equivalent of horse-riding in our world. To the countryside, your cab might pass trail ridden by ground sloths, their slow, ponderous pace adhering perfectly to the verdant environment. And don't be shocked to find saber-toothed cats playfully pouncing in your backyards, their domesticated versions fill this world's pet shops. This alternate universe developed a symbiotic relationship between the megafauna and humans. Instead of their monstrous portrayal, these creatures feature in the narrative of essential service providers, domestic animals, transport, and utility aids. Oh, and then there is the unique culinary world. Apart from the regular vegan and non-vegan options of the present world, the gastronomy here is a feast with a distinctive 'Megafauna' section, covering food preparations using mammoth meat, ground sloth soups, etc. Cinemas, unlike our Jurassic Park, showcase movies titled 'Megapark' or 'MegaZoo', where the megafauna peacefully coexist with people. The pivotal point here being - in this world, humans learnt from the alleged 'mistakes' of the real timeline. They mitigated hunting, promoted conservation, and devised unique ways of peaceful interactions. Preservation efforts and megafauna-centric laws, ecotourism ventured into deep forests for a sight of these amazing animals in their natural habitat, and city planning considering these mega-beings just as regular road users - these all form the crux of civilizations standing tall and working hand-in-hand with nature in this version of the world. This timeline paints a picture of how harmonious coexistence with nature and giant fauna might look, had the Quaternary extinction event never occurred.