My puppy only has one testicle. Is that normal?

By Dr. Steve Pelton, DVM

The short answer

Both testicles usually drop early, and most are down by the first vet visit. If one's missing, your vet will keep checking. If it isn't down by about 6 months, it probably won't come down on its own, and it should come out at the neuter, because one that stays inside is more likely to cause trouble later.

Why it happens

Testicles start inside the belly and travel down early. Sometimes one stalls along the way, and after a few months it usually stays put.

Which door?

WATCHYour vet will keep checking. If it isn't down by about 6 months, it probably won't come down on its own.

When to call

Tick what fits and see which door you're at.

WATCHMention it at every puppy visit

Your door: WATCHWATCH

Nothing ticked and he's bright, playful, eating and drinking? Keep an eye on him, jot down what you see, and call in the daytime if it doesn't settle.

Under 16 weeks, a toy breed, or not done with his shots? Move everything one door closer to GO NOW.

Not sure which door you're at? That's a call. Call your vet.

General education, not veterinary advice. Your vet's plan for your puppy comes first.