the big hippopotamus, the fast horse and the fossil horseshoe crab.

cartoon diagram presentation line text drawing person advertising play clothing poster face sketch learning adult document hippo hippopotamus big fast horse fossil horseshoe crab three animals started letter including run land swimmning running swimming ocean hippos horses crabs swim alphabet animal triangle wildlife colorful letters creature simple digital art graphic design fauna wild nature education abc pixel black white mammal sea tusk green blue brown pink africa livestock pet grass river anthropods declining benthic herbivore vulnerable large