Two words that are often used as synonyms, “feral” and “wild.” I
learned recently that they
are not quite the same. A “wild” animal is an animal that has not
itself been domesticated (or is not descended from formerly domestic
animals). A “feral” animal is one that was (or had ancestors were)
domesticated and have since returned to the wild. I have no idea what
the standard is for ancestors, or how to deal with animals that are
crosses between feral and wild animals.