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.
可愛的大象（＃1）
cactus-icon、cute、elephant、happy、trunk、Yes
仙人掌圖標、可愛、象、快樂、樹幹、是
資料來源：openclipart ( https://openclipart.org/ )