From article on the Earther website….
“According to a study published in Ecography, megafauna, defined as plant-eating terrestrial mammals weighing more than 100 kilograms (220 pounds) on average, are establishing themselves in new and often unexpected places outside of their historic native ranges. These introduced populations would typically be considered invasive species, but the authors think a better term might be “survivors.” Furthermore, the giant animals, which include everything from hippopotamuses to donkeys, might offer unexpected benefits to their new homelands. In a recent article in The Conversation, the authors write that “these ‘feral’ populations are rewilding the world with unique and fascinating ecological functions that had been lost for thousands of years.”
The article describes a fascinating behavious of Wild Burrows digging wells in the desert which provides water for many other species: