FURVERT!

animal_genitalia animal_penis belly black_body black_fur black_nose black_pawpads black_spots blue_eyes blush border_collie breath brown_eyes canid canine canine_genitalia canine_penis canis claws collie domestic_dog duo erection female feral feral_on_feral floppy_ears flustered folded_ears footprint foreplay fur genitals herding_dog hi_res imminent_sex knot knotted_penis kryotea looking_at_another looking_back looking_back_at_another male male/female mammal markings multicolored_body multicolored_fur night one_eye_closed open_mouth pastoral_dog pawpads pawprint penis red_penis sheepdog side_view snow snowing spots spotted_body spotted_fur tan_body tan_fur two_tone_body two_tone_fur white_belly white_body white_fur