FURVERT!

2015 2:1 4_toes 5_fingers abs abstract_background animal_genitalia animal_penis anthro anus backsack balls becoming_erect biped blue_background blue_eyes brown_body brown_fur butt canine_genitalia canine_penis character_name claws digitigrade erection feet finger_claws fingerpads fingers fully_sheathed fur genitals grin knot knot_in_sheath looking_at_viewer male mammal membrane_(anatomy)model_sheet multiple_angles muscular muscular_anthro muscular_male mustelid neck_muscles nude open_mouth otter pawpads paws pecs penis penis_tip perineum raised_tail sequence shaded sheath side_view simple_background smile solo standing tagg_(cgibeast)tail text toe_claws toes tongue tsaiwolf turnaround unsheathing webbed_hands