Rear end of a male dog, showing its testes (testicles) and penis.

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Size: 3741px × 2598px
Photo credit: © MARK THOMAS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: anatomical, anatomy, animal, biological, biology, bollocks, bottom, close-, detail, dog, dogs, domestic, domesticated, fauna, genitalia, genitals, haunches, hind, leg, legs, male, mutts, nature, nuts, organ, organs, pet, quarters, rear, reproductive, standing, testes, testicle, testicles, testis, wildlife, zoological, zoology