rule 34 2021 5 fingers abs anthro backpack ball tuft balls biceps big balls big penis black penis blonde hair blue eyes bovid bovine brown body brown fur cabura caprine cloud dark grey fur detailed background digital media artwork erection exhibitionism facial hair fingers fur genitals gloves marking goat goatee hair hi res hooves horn humanoid genitalia humanoid penis landscape leg markings male mammal markings mocca character mountain multicolored body multicolored fur muscular muscular anthro muscular male nature nature background nipples nude outside pecs penis pubes retracted foreskin river signature sky smile socks marking solo teeth text tuft white balls white body white fur 5161141