Attack against these animals began with the arrival of the first

Attack against these animals began with the arrival of the first European settlers, who wished to protect their livestock. Eventually, a reward was offered to hunters for every predator that was killed.
【正确答案】：随着欧洲殖民者的到来，他们为了保护自己的牲畜开始攻击动物。最终，被杀的每一个食肉动物作为奖励分给了狩猎者。