This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain.
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See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher 豪豬 animal、biology、black and white、DESERT、externalsource、line art、mammal、outline、psf、wikimedia commons、zoology 動物、生物學、黑與白、沙漠、外部源、線條藝術、哺乳動物、大綱、PSF、維基媒體公地、動物學 資料來源:openclipart ( https://openclipart.org/ )