Keywords
animal, animal head, animal mouth, animal teeth, animal themes, animal tongue, asia, blank expression, china, close-up, color image, colored background, day, digital, facial expression, hippo, hippopotamus, horizontal, loneliness, mammal, mouth open, no people, outdoors, photography, rock, side view, single animal, staring, strength, taipei, taipei zoo, taiwan, wildlife, yawning, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u12856817