This image was adapted from a picture posted to publicdomainq.net. All of the images on these sites are in the public domain i.e. CC0. This site is only in Japanese but can be easily navigated with Google Translate.
母親與兒子和狗打羽毛球
badminton、boy、dog、fun、game、grass、kid、mother、play、publicdomainq.net、son、woman
羽毛球、男孩、狗、開玩笑、遊戲、草、孩子、母親、玩、public domain Q.net、他的、女人
資料來源：openclipart ( https://openclipart.org/ )