Also, doesn’t ‘feral’ mean exactly that? 1 (of animals and plants) existing in a wild or uncultivated state, esp. after being domestic or cultivated. I don’t

Also, doesn’t ‘feral’ mean exactly that? 1 (of animals and plants) existing in a wild or uncultivated state, esp. after being domestic or cultivated. I don’t know of a verb form, but perhaps that reflects the fact that it doesn’t require human agency to occur; animals just go/become feral (and, as you say, humans can also take active steps to help reintroduce them to the wild).