Guinea Pig Respiratory Infections: Signs and Treatment

Why Are Respiratory Infections So Dangerous in Guinea Pigs?

Guinea pigs are obligate nasal breathers and have small, relatively inflexible lung volumes. Respiratory infections progress rapidly from upper respiratory tract to pneumonia, and guinea pigs deteriorate fast once pneumonia establishes. Bordetella bronchiseptica (carried by many healthy rabbits and dogs without causing them disease) is one of the most dangerous bacteria for guinea pigs and can be transmitted between species. Guinea pigs should never be housed with rabbits for this reason. Streptococcus pneumoniae and Pasteurella multocida are also common pathogens.

First 3 Steps to Take at Home

Recognize early signs immediately: Early URI signs include sneezing, nasal discharge (even small amounts), reduced activity, and slightly reduced appetite. At this stage, a same-day vet visit can prevent progression to pneumonia.
Keep the guinea pig warm: Maintain temperature at 22–24°C. Sick guinea pigs lose heat rapidly, and hypothermia combined with respiratory infection is frequently fatal. A heat pad on low under half the enclosure allows the guinea pig to self-regulate.
Separate from other guinea pigs: Respiratory infections in guinea pigs spread readily through a group. Isolate the sick animal and monitor all companions closely.

When to Go to the Vet Immediately

Any nasal discharge — even clear — alongside reduced activity
Labored, rapid breathing or open-mouth breathing
Blue tinge to the lips or gums
Complete food refusal with respiratory signs
Any sneezing in a guinea pig that shares a room with a rabbit or dog

Follow-Up Care Checklist

Complete the full antibiotic course — respiratory infections in guinea pigs require extended treatment (2–4 weeks)
Nebulization may be recommended by your vet for severe cases
Supportive care: warmth, syringe feeding if not eating voluntarily, vitamin C supplementation
Recheck in 1 week to assess treatment response

Track Respiratory Symptoms with TailRounds

Log respiratory rate, sneezing frequency, discharge character, and appetite daily during illness using the TailRounds Daily Log.

Book a Vet Appointment

Respiratory infections in guinea pigs are always urgent. Book at Happy Paws today — don't wait to see if symptoms resolve on their own.

Summary for Your Clinic Visit

Tell your vet when symptoms started, the character of any discharge, the guinea pig's housing companions (especially rabbits or dogs), current temperature of the environment, and eating status.