rule 34 anthro athletic athletic anthro athletic male balls black body black fur black skin boots brown body brown fur brown skin canid canine canis clothed clothing collar colored dobermann domestic fangs feet flat colors footwear fur genitals hair hand gesture hi res humanoid hands invalid tag jacket kain vanderhilt lace up boots looking at viewer male mammal model sheet morrirylet multi nipple nipples nude paws penis pinscher red eyes simple background slim small waist smile solo standing tall teeth topwear tucked shirt vein watermark 4238801