This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. --- See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher
鴨嘴獸
animal、aussie、australian、biology、black and white、blood、eggs、externalsource、lay、line art、mammal、native、outline、platypus、psf、swim、warm、water、wikimedia commons、zoology
動物、澳元、澳大利亞、生物學、黑與白、血液、蛋、外部源、鋪設、線條藝術、哺乳動物、本地人、大綱、鴨嘴獸、PSF、游泳、暖、水、維基媒體公地、動物學
資料來源：openclipart ( https://openclipart.org/ )