Sentence:  Traffic, abuse, inhumane traps, and accidental poisoning are other hazards <WSD>ferals</WSD> must face....In England one gamekeeper claimed to have killed over three hundred <WSD>ferals</WSD>, while another brought home pelts to his wife so that she could design rugs from cat skins as a source of secondary income. 
Meaning of the word marked with <WSD> tags:  A domesticated animal that has returned to the wild; an animal, particularly a domesticated animal, living independently of humans.