Jack Rabbit. The large prominently-veined ears help with both heat gathering (when they spread them to absorb the sun's warmth) and heat elimination (when the veins expand to dissipate excess warmth into the air.)
Anatomiplancher med dyr / dyrlægeplancher. nemfrog: “ Beginners’ Zoology. 1922. ”
Evolution by FelineFire.deviantart.com
Sea turtle embryo anatomy -- Included in book, Sea Turtles of the World, by James Spotilla
How To Draw A Cheetah by LCibos.deviantart.com on @deviantART
Historic Horse Head Gear Part 2 by sketcherjak on DeviantArt
Pony Anatomy Tips/Study/Tutorial by kilala97 on @DeviantArt
Fruit bat --- I can't stop looking.