knotted cock

As blood fills the engorging tissues of the canine penis, it slides out of the loose, wrinkled penile sheath, colored deep cranberry red. Prominent dark veins trace elaborate, vivid lines against it, contrasting with the otherwise smooth skin tone, feeling ropey to the touch. The rigid erect penis, tapering from a narrow base to a flattened, widened glans, is firm yet spongy, already slick with a coat of precum covering it. At the root, the shaft of the cynoid penis broadens into a rounded bulb shape, forming the enlarged penile knot. The knot is a sizable mass of deep burgundy tissue, its ridged surface fit for massaging and stimulating the lay. After ejaculation, the canine penile knot expands to its maximum girth, securing the penis inside, preventing it from withdrawing. The canine scrotum is a rounded pouch of thin skin, so tight it's almost translucent. The paired testicles inside are seen with such clarity, as if they're out in the open. Each swelled testis is ovoid but slightly oblong in shape, bulging outward like an overfilled water balloon and pulsating, young virile semen swarming and thrashing inside. Posterior to them, the bloated, coiled epididymis constantly contracts to push out the matured voluminous sperm, sluggishly corkscrewing toward the thick tubular vas deferens, which laboriously funnel it towards the prostate, where it'll enter the urethra to be shot and spilled out of the urinary meatus. Such a cynoid reproductive organ with its characteristic penile knot can belong not only to dogs, wolves, foxes, coyotes or other actual canids, but also to magical creatures like hellhounds, barghests, gnolls, as well as other shapeshifting beings with canine lineage: werewolves, kitsunes, skinwalkers, and many more hybrids with canine origins in myth and folklore.