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anthro balls biceps big_penis border border_collie cam_collins canid canine canis clothing collie coveralls curious domestic_dog duo erection foreskin genitals glans herding_dog humanoid_genitalia humanoid_penis humor hybrid_genitalia hybrid_penis knot knotted_humanoid_penis knotted_penis leaning leaning_backward male male/male mammal masturbation mechanic monochrome muscular partially_retracted_foreskin pastoral_dog pecs penile penile_masturbation penis pose question_mark sheepdog stroking_penis tail text unprofessional_behavior url white_border wolfblade worker working