这位警察的攻击犬多次救了主人的命。
这位警察的攻击犬多次救了主人的命。
这些犬并不经常吠叫，会攻击进入它们守护区域的陌生人。
These dogs do not bark alot and will attack strangers who enter the protected area.
防护犬，用来保卫屋子，和牧羊犬的区别在于防护犬具有对陌生人极其强烈的攻击性，但是前提是它们尊重并且听从于主人。
Guarding dogs who protect the house differ from the herding dogs because of their extreme aggressiveness towards strangers, but as a rule they respect and listen to their owner.
社会攻击驱策下的犬，表现出深沉的低嚎。
Social aggression is characterized by a dog that demonstrates a deep grumbling bark.
此外，如果有人试图伤害狗的主人或有人知道牧羊犬被称为攻击的人。
Also if someone tries hurting the dogs owner or someone it knows then the Collie is known to attack the person.
恶劣：攻击或试图攻击任何一个裁判或牵犬师则被认定为恶劣，对其他犬有攻击性或有好斗倾向将不被认定为恶劣。
Viciousness: a dog that attacks or attempts to attack either the judge or its handler, is definitely vicious. An aggressive or belligerent attitude towards other dogs shall not be deemed viciousness.
恶劣：攻击或试图攻击任何一个裁判或牵犬师则被认定为恶劣，对其他犬有攻击性或有好斗倾向将不被认定为恶劣。
Viciousness: a dog that attacks or attempts to attack either the judge or its handler, is definitely vicious. An aggressive or belligerent attitude towards other dogs shall not be deemed viciousness.
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