What are Hair Rings?

A hair ring consists of loose fur that becomes trapped on the sheath of a chinchilla’s penis. When the penis retracts itself, the fur rolls up, forming a tight ring of knotted fur that encircles the penis, causing discomfort to your chinchilla and leading to potential health problems. You’ll have to check your chinchilla’s penis regularly to ensure he doesn’t have a hair ring bothering him. It’s best to do these checks monthly.

Symptoms of Hair Rings in Chinchillas

You’ll notice unusual behaviors in your chinchilla when he is experiencing physical discomfort from a hair ring around his penis. If you notice he’s grooming excessively or straining to urinate, check his genital area. You’re likely to discover the ring. Also, look for these symptoms:

  • Prolapsed penis (the penis is extended, not retracting back into the sheath)
  • Penile discharge
  • Excessive grooming
  • Trouble urinating
  • Vocalizing when trying to urinate (grunts or squeaks)
  • Physical discomfort and pain
  • Problems with mating
  • Lethargy
  • Loss of appetite
  • Visible swelling of the penis
  • Discoloration of the penis

Causes of Hair Rings in Chinchillas

A hair ring is caused by loose fur becoming trapped in the sheath, or foreskin, of a chinchilla’s penis as it retracts. Hair rings may develop on any male chinchilla, though breeding and dominance mounting may increase the risk of a hair ring forming.

Diagnosis of Hair Rings in Chinchillas

Closely examine the genitalia of your male chinchilla. His physiology includes a penile cone, just above his anus. Below the anus, you’ll see the testicles. The scrotum and testicles may not be easy to spot, because of how furry the chinchilla is.

If your pet does have a hair ring, he may not be able to retract his penis. If you see his penis in a prolapsed position and your chinchilla is grooming excessively, take him to the vet so the ring can be removed. 

Your vet will examine your chinchilla. He should be able to see the hair ring encircling your pet’s penis. If your chinchilla has been able to retract his penis back in its sheath, your vet will help him to unsheathe it. To do this, he slowly, gently eases the sheath back so the tip of your pet’s penis is visible. 

Your vet will wet his fingers with lubricant (water-based only) or water and take the tip of your chinchilla’s penis between his finger and thumb, gently extending it. When the penis is fully extended (it should be about an inch-and-a-half long), your vet will be able to see the hair ring.

Treatment of Hair Rings in Chinchillas

With his fingers and a pair of tweezers, your vet will slowly work the hair ring until it is loose. This makes it easier to remove the ring from around your chinchilla’s penis.

Your vet can show you how to remove hair rings on your own. If this happens again, which is likely, you need to have the knowledge to take care of your chinchilla’s genital health.

Keep a close eye on your pet once a hair ring has been removed. He needs to be able to regain use of his penis so he can urinate and engage in sexual activity. If you see any swelling or redness, or if his penis won’t retract completely, take him back to the vet. He may have developed an infection.

Recovery of Hair Rings in Chinchillas

A penile hair ring is usually not a life-endangering condition for your chinchilla, unless the ring isn’t noticed and removed. When a hair ring stays on his penis, he won’t be able to urinate, which may lead to the retention of urine. 

Retaining urine in his bladder puts your pet at risk of developing bladder damage, a urinary tract infection, or even kidney problems. If he loses circulation in his penis, he can suffer tissue damage. If the problem becomes severe enough, he may even develop blood poisoning (septicemia). If the hair ring is tight enough, it can even lacerate your chinchilla’s penis.

Hair rings are fairly common in chinchillas, but are easily treated and a full recovery can be expected in most cases.

Hair Rings Questions and Advice from Veterinary Professionals

7 Months
Mild condition
0 found helpful
Mild condition

Has Symptoms

Penis area redness
Pawing at mouth/nose area

My chinchilla was excessively grooming himself so I checked for hair rings and he had a small clump of hair and small pieces of hair stuck so I pulled them off and his penis retracted properly with no problem. However due to the discomfort, I assume he has irritated the outside and it’s red and irritated. Can I do anything to soothe this for him so he doesn’t continue to scratch at it and irritate it further?? I also have another question which I’m not sure if it related to the hair ring but he has been rubbing his face on the floor of his cage and pawing at his nose/mouth area more frequently than normal. Thank you in advance!

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
3320 Recommendations
It is not unusual for discomfort to occur after the removal of hair ring(s) and it may take a few days for Theodore to be comfortable, you should keep an eye on him but if there is no improvement you should check with your Veterinarian as he may have an infection or other disorder which may require treatment. As for the rubbing of his face, this may be due to a dental disorder or other oral irritation; you can ask your Veterinarian about it when you pop in for a check. Regards Dr Callum Turner DVM www.msdvetmanual.com/exotic-and-laboratory-animals/rodents/chinchillas www.msdvetmanual.com/all-other-pets/chinchillas/routine-health-care-for-chinchillas

Add a comment to Theodore's experience

Was this experience helpful?

5 Years
Mild condition
0 found helpful
Mild condition

Hi, recently I bought male chinchilla. He is about 5 years old. I noticed that his penis is long and at the end changed colour. It look like prolapsed. He had hair ring on it.

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
3320 Recommendations
Has the hair ring been removed? The hair ring would prevent the penis from retracting and may cause blood flow issues to the tip of the penis. Given the change in colour and the fact the penis isn’t retracting you should have your Veterinarian take a look as a closer examination is needed and Gizmo may require a round of antibiotics. Check the link below which give some advice on chinchilla health. Regards Dr Callum Turner DVM www.merckvetmanual.com/all-other-pets/chinchillas/introduction-to-chinchillas#v3224992 (this may be useful, chose a heading on the right hand side of the page)

Add a comment to Gizmo's experience

Was this experience helpful?