FURVERT!

4_toes alpha_channel animal_genitalia animal_penis anthro balls biped border_collie canid canine canine_genitalia canine_penis canis claws collie digital_media_(artwork)domestic_dog erection feet fur genitals hair half-closed_eyes herding_dog hi_res kingrusty knot male mammal multi_nipple mxrdoc narrowed_eyes nipples nude pastoral_dog pawpads paws penis sheath sheepdog simple_background sitting smile smirk smug solo toe_claws toes