The image is a meshed silhouette of a cat. The original image is an OCAL clipart called "Cat silhouette" uploaded by "liftarn". Thanks. I used Inkscape's function "path>difference".
網狀輪廓-cat
cat、Inkscape、liftarn、mesh、meshed-silhouette、remix+256753、silhouette、Silhouettes、yamachem
貓、Inkscape中、liftarn、嚙合、網狀剪影、混音+ 256753、輪廓、剪影、Yamache米
資料來源：openclipart ( https://openclipart.org/ )