求翻译：犬的表情变化很丰富，其喜怒哀乐可以通过全身各部的变化毫不掩饰地表现出来，掌握好犬的情绪变化对于饲养和训练很重要。但是犬的表情变化与人类相比就显得简单、平凡，而且有的表现非常相似，必须仔细观察才行。比如犬高兴的时候耳朵下垂，愤怒时耳朵也下垂；尾巴也是这样，高兴时摆动，愤怒时也摆动，而高兴和愤怒几乎是两种完全相反的情绪变化，这时我们就必须借助于犬的叫声、眼神及身体其他部分的状况来综合判断，只有这样才能正确地把握住犬的情绪变化。是什么意思？

Changes in the expression of the dog is very rich, and their emotions by the change of the whole body undisguised manifested to master good dogs mood changes is very important for the breeding and training. But compared to the dog's expression change and human is the simple, ordinary, and in some ca

The dog looks very rich, and the joy of the whole body can be changed without any disguise, dogs with good mood for the breeding and training is very important. But the dog looks when compared to human it is simple, ordinary, and some are very similar, it must be carefully observed. For example dog

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Dog's face changing is very rich, their emotions can be manifested through systemic changes in ministries to undisguised, master dog mood changes for raising and training is very important. But compared to the dog's face change and human is simple, ordinary, and in some cases very similar, must be c

Dog's expression change is very rich, its laughter, anger, sorrow, and happiness may not mince matter display through whole body each change, grasps the good dog the mood change is very important regarding raising and the training.But dog's expression change and the humanity compare appear are simpl