Why is my senior dog's penis dark and extended after chewing?

If a male dog is aroused by a female dog that is in heat and close by, the penis will become erect. You typically don't see the penis, as it is "hidden" inside the prepuce, or sheath. Depending on the size of the dog it can be quite long, so I would consider this likely to be normal as long as it returns completely inside the sheath once the arousal is over.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! From your pictures that is actually normal . The tip of the prepuce can look like that because you can see the inside tissue of the prepuce. I would assume that you can see if better now since the hair has been removed. Unless he is uncomfortable and licking his penis I wouldn't take him in. I hope this helps!

Thank you for using Petco Pet Education Center, formerly Petcoach. If the swelling is transient and goes away after a few moments this may be normal arousal in an unneutered male. However if it has lasted more than a few minutes I recommmend having Beethoven checked by a veterinarian. Prolonged swelling can be an emergency if it affects circulation to the penis.

That could be due to a paraphimosis, which is basically when the foreskin becomes trapped behind the glans penis, and cannot be pulled back in normal position. Chronic paraphimosis should be treated as glans penis can get inflamed/traumatized. If not paraphimosis the sign you described could be completely normal and due to physiological constant excitement. I would recommend recommend a check up to rule out paraphimosis.

It's not a weird question! The dog's penis contains a bone called the os penis. This bone can give the penis a white color if the tissues are pulled tight on it. It's normal, and I wouldn't worry about it unless he's excessively licking at it, straining to urinate, or has blood in his urine :-)

There is gland at the base of their penis that can get enlarged when excited and not fixed. If his penis was out and this gland was enlarged with blood he may have gotten too excited which caused the increased blood flow to the area. If this is the case the swelling and blood should completely be gone with his penis back in within 30 minutes. If it is not then I would take him to a vet for further treatment

It's a little difficult to tell for sure, but I wonder if Charlie had a persistent penile frenulum. It is a band of tissue that runs along the underside of the penis and attaches near the tip of the penis. That will cause the penis to curve. Normally we recommend surgically cutting the frenulum. I have not had one rupture on its own. They do not typically reattach after surgically cutting them. I would recommend having your veterinarian examine it to make sure that it was a persistent penile frenulum and see if anything else needs to be done about it. In the meantime, I would recommend trying to keep Charlie from licking at it and prevent any humping. If you are unable to stop the bleeding, then he may need to be examined tonight. Good luck! I hope that was helpful. Thanks for using Petco Pet Education Center, formerly Petcoach.