rule 34 1998 3 toes 4 fingers anthro apatosaurus astor balls big abs big balls big biceps big muscles big pecs big penis big quads black and white claws dinosaur diplodocid feet finger claws fingers flaccid genitals humanoid genitalia humanoid penis l frank long neck long tail low angle view male monochrome muscular muscular anthro muscular male pecs pen artwork penis reptile sauropod scalie simple background solo tail toe claws toes traditional media artwork 9032152