intimate

狎 is composed of the radical 犬 (dog) and 甲 (tortoise shell, armor). 甲 is a pictograph of a tortoise shell, an inseparable part of the tortoise’s body, implying closeness or intimacy. 犬 is a pictograph of a dog, broadly referring to beasts, which lack human sensibilities. Thus, 狎 is often used to describe improper or overly familiar behavior.