illustration of newborn wallaby shown crawling up its mother's stomach fur to reach pouch, and suckling inside pouch - 乳頭 動物軀體結構 幅插畫檔、美工圖案、卡通及圖標
illustration of wallaby mother with newborn, insets showing newborn wallaby crawling up to its mother's teat - 乳頭 動物軀體結構 幅插畫檔、美工圖案、卡通及圖標
