My old dog's testicles just dropped. Why are they red and painful?

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Gino! Is Gino eating and drinking? Is he urinating? Is there anyway you can re-post with pictures? Gino could have a testicular torsion, urethral prolapse (especially if you are seeing blood at his penis), a urinary tract infection or simply a skin infection on his belly or testicles or even fleas. I recommend extruding his penis and looking at the tip, checking his skin for fleas and pustules or red bumps. And if he is having trouble urinating and/or isn't eating he needs to see a Vet. I hope this helps and I wish Gino the best!

If the testicle is just under the skin on his belly he could have an undescended testicle. In puppies this can sometimes correct with age, but if he is 6 months or older it likely won’t drop anymore. The vet can surgically remove the testicle during a neuter surgery.

If the skin was damaged to the point that the testicles are exposed your dog must be seen by a veterinarian right away to assess whether the testicles can be saved and repaired, or whether he needs to have the damaged testicle(s) removed. This will likely also be infected. Please take your dog to a Pet ER now.

Bright red is never good. Check for heat, pain as well. If the testicles are hot and painful as well as red then there is a likely chance that he has an infection or inflamed skin. You should schedule a vet appointment for Charlie Mac. He may need antibiotics and anti-inflammatory medication.

Swollen testicle can be due to torsion, allergic reaction or infection. i would recommend having it checked by your vet ASAP, if the swelling is too large you will need to take him to the emergencies if your vet is not open today.

Figo needs to be seen by a veterinarian immediately. He could have a blood clot to his testicles or even they could be rotated cutting off the blood supply. He could also have an infection. All these causes can call significant pain as well as need immediate surgical intervention. Do not give him any pain medication at home as it can be very toxic to dogs.

I see that your dog is unneutered - one condition that can come on suddenly and be extremely painful is called testicular torsion. Basically, one of the testicles becomes twisted inside the scrotal sac, cutting off the blood supply and causing swelling and intense pain. Based on your description, I would be concerned about this possibility and would recommend getting your dog to a vet as soon as possible, since he is in a lot of distress and there is really nothing that can be done at home to help. Other possibilities would include a scrotal or testicular infection, a tumor, or even a scrotal hernia.