[countable] ananimalthatmanypeoplekeepasapet, orforworkingonfarms, hunting, etc.狗;犬➨ WORD BUILDING 词汇扩充A young dog is called a puppy.小狗称作 puppy。When a dog is happy, it wags its tail.狗高兴时会摇 (wag) 尾巴。A dog barks, growls if it is angry, and whines if it is unhappy.狗发怒时会狂吠 (bark) 或低声吼叫 (growl),不高兴时会悲嗥 (whine)。