[咬人狗儿不露齿 / 咬人狗兒不露齒, yǎo rén gǒu r bù lù chǐㄧㄠˇ ㄖㄣˊ ㄍㄡˇ ㄦ˙ ㄅㄨˋ ㄌㄨˋ ㄔˇ] the dog that bites does not show its fangs (俗语 saying); fig. You can't tell the really dangerous enemy from his external appearance., See Also: 俗语
[ろう, rou] (n) (1) { Buddh } offering ceremony held on the third day of the dog after the winter solstice; (2) twelfth month of the lunisolar calendar; (3) (See 臈) year in the Buddhist order (after the completion of the first meditation retreat)