hippopotamus hippopotamus amphibius family enjoying the water, refreshed by the summer heat

africa amphibius animal animals artiodactyl bath beautiful because big brown canines chordata crocodile dangerous day ears enjoyed enjoying eyes face family fangs forest fragile green heat herbivorous high hipopotamos hippopotamidae hippopotamus hippos incisors lake land landscape mammal mammalia most mouth mud natural nature nose outdoor partner predator refreshed reptile river ruminant semiaquatic shore skin spend submerged summer teeth temperatures their three travel vegetation water wild wilderness wildlife