a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds;
"the dog barked all night"
例句
用作名词 (n.)
The wolf was tamed and evolved into the house dog. 狼被驯服并逐渐演化为家犬。
My Dog, a dingo bred to herd sheep, also came on the trip. 我的家犬也同行旅游来了,是条用于牧羊的澳洲野犬种。