My 6-week-old puppy has one testicle larger. Should I worry?

Yes, your dog's testicles should be approximately the same size. One can be a tiny bit smaller, but there should not be a huge difference. Your dog needs to be seen by a veterinarian as he could have a testicular tumor, a testicular torsion, an abscess or orchitis or brucellosis. Please take him to a vet ASAP.

It certainly looks like your dog has completely normal and healthy testicles, as far as I can possibly say without palpating them. It is quite normal that one testicle is a little bit bigger than the other. The skin looks normally pale pink, ie not red and inflamed, and the scrotum appears to have normal hair. So, I do not think you have to worry about Bear's testicles being abnormal or diseased.

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.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! You should be able to feel the testicles. If you only feel one then the other testicle is still not descended. They should be both down by birth or by 4 months. It just means the vet will have to search for the retained testicle when he gets neutered. He should be neutered because it is a congenital or genetic disease and the testicle can become cancerous over time. I hope this helps!

It means Konan is a cryptorchid. One of his testicles hasn't descended. This can happen, but dogs with this condition should never be bred because it's genetic. I would have him neutered, and the vet can remove both testicles. I hope this helps!

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.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! The saggy nature of Leo's scrotum and testicles is just cosmetic and there is not medical worry. It is likely hereditary in nature. If you plan to neuter him the Vet can also fix the scrotum (scrotal ablation). Other wise there is nothing to do about it now. He does seem quite well endowed. If the testicles suddenly seem more enlarged then I would have him seen as he could have an infection, suffered trauma or if painful a torsion. I wish you the best