@henry This isn't as much true. Horses keep being breed by humans, used in races and steaks. The hard lesson is that humans don't return anything to nature, not even themselves.
The clear example is industrial revolution, after which humans haven't been freed from work, but just advanced to new forms of slavery.
Note that I'm truly convinced about the good from technological advances: I just see that humans, on average, can't change for good. The solution is beyond my humble comments.

@luc0x61 @henry Someone above mentioned the rock dove or “homing pigeon” that is probably the only example of “returning to the wild” that was relatively successful and rather invasive 😹 (but hey, at least they can survive urban cities better than most species 😹) . Before the invention of the telegraph and a secure messaging system (no telegraphs weren’t entirely secure 😹) pigeons were the fastest form of communication (I don’t know if this makes you feel any better 😹)