My chihuahua's testicles look purple. Is this normal for dogs?

What you may be seeing is his bulbus glandis. They are two glands located at the base of the penis on both sides. They function during mating to effect the tie while mounting a female. This is normal and likely no cause for concern. The pigmentation of his scrotum may also be normal. You can have him seen by your veterinarian to discuss any concerns regarding either.

Your dog's testicles should have descended when he was a much younger dog. The fact that you're just noticing this now makes me very worried that something is wrong. He could have a torsion, mass, or infection. I would have him seen by a veterinarian as soon as possible. He may need to be neutered to resolve this issue.

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be due to a severe infection for example. This warrants a veterinary evaluation as soon as possible as this is likely causing him severe discomfort. They would be able to check this more closely and recommend therapy accordingly. Best of luck!

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.

It is really hard to tell by pictures if skin is normal. I think based on the photo that Ludo does have normal testicles. The testicles can have some pigment on them. However at anytime Ludo is not acting normal, itching, abnormal urination or not eating I would recommend taking him to a vet to have them checked in person. hope that helps

This is may be normal but it's impossible to know without palpating the area. Palpate both testicles at the same time. If they feel like they are different sizes, different temperatures, different shapes or seem painful, I recommend to have him examined by his veterinarian. I hope this helps.

The picture does not show anything concerning but I would continue to monitor for any sweliing or discomfort which may indicate a painful infection or assymetry which can indicate a tumour. Rapid increase in size can occur with scrotal hernias which although rare are a surgical emergency.