Guinea Pig Preventive Care Schedule: Checkups, Weight Monitoring, Dental Checks, and Parasite Prevention

Daily: Check appetite, hay intake, droppings, breathing, posture, and activity. Refill fresh water, offer unlimited grass hay, and spot-clean wet or soiled areas of the enclosure. Guinea pigs hide illness well, so small behavior changes matter.

Weekly: Weigh each guinea pig on a gram scale, clean the enclosure thoroughly, and look closely at the coat, skin, feet, and front teeth. Long-haired guinea pigs may also need brushing several times a week to prevent matting and urine scald.

Every few weeks: Trim nails as needed. Some guinea pigs need trims more often than others depending on age, activity, and how quickly the nails grow.

At least yearly, and often every 6 months: Schedule a wellness exam with your vet. The visit usually includes weight and body condition review, oral exam, skin and coat check, discussion of diet and vitamin C intake, and parasite screening if there are symptoms or risk factors.

A guinea pig can keep eating a little while still losing weight, especially with dental disease, pain, or chronic illness. Because of that, weekly weights are more helpful than guessing by appearance alone. Use the same scale each time, weigh at about the same time of day, and record the number in grams.

Call your vet sooner if you see a steady downward trend, a sudden drop, or weight loss paired with reduced appetite, smaller droppings, drooling, lethargy, or hiding. Even when the change seems small, trends over 1 to 3 weeks can be clinically important in a small mammal.

A healthy adult guinea pig often weighs roughly 500 to 1,500 grams depending on sex and body frame, so there is no single ideal number for every pet. What matters most is your guinea pig’s own normal baseline and whether that baseline is changing.

Guinea pig teeth grow continuously throughout life. Unlimited grass hay is the foundation of dental prevention because the long chewing motion helps wear teeth more naturally. Pellets and treats should not replace hay.

At home, you can monitor for drooling, wet chin, dropping food, chewing on one side, slower eating, smaller droppings, reduced hay intake, swelling along the jaw, or weight loss. Healthy front teeth should generally be even and white. Problems with the back teeth are common and may not be visible without a veterinary exam.

If your guinea pig seems painful, stops eating, or has trouble chewing, see your vet promptly. Dental disease in guinea pigs may require oral examination under sedation or anesthesia, plus skull radiographs or CT in more complex cases. Early evaluation usually gives your vet more options than waiting until the guinea pig is weak or not eating.

Guinea pigs can get external parasites such as mites and lice. Common warning signs include scratching, hair loss, flaky skin, scabs, restlessness, and sensitivity when touched. Some cases are mild, while others can become severe enough to cause pain, self-trauma, or weakness.

Prevention starts with good housing hygiene and smart quarantine. Keep bedding dry, clean the enclosure on schedule, wash bowls and bottles daily, and quarantine new guinea pigs before introducing them to your established group. If one guinea pig is itchy, your vet may recommend checking all in-contact guinea pigs.

Avoid using over-the-counter flea, tick, or mite products unless your vet specifically says they are safe for guinea pigs. VCA notes that some products, including mite collars, organophosphates, straight permethrin sprays, and permethrin spot-on treatments, may be toxic in guinea pigs. If your guinea pig has skin disease, your vet may recommend diagnostics such as a skin scraping, tape prep, fungal testing, or other targeted treatment rather than routine preventive medication.

A preventive visit for a guinea pig is usually more detailed than many pet parents expect. Your vet will often record weight, review body condition and muscle condition, listen to the heart and lungs, examine the eyes and nose, assess the coat and skin, and check the mouth and tooth alignment as much as your guinea pig allows.

Your vet may also review diet, hay intake, vitamin C supplementation, enclosure setup, bedding, exercise, and social housing. If there are concerns about itching, hair loss, diarrhea, or weight loss, your vet may suggest additional testing such as a fecal exam, skin scraping, fungal culture or PCR, bloodwork, or imaging.

For a new guinea pig, that first visit is especially useful. AVMA guidance for pet rodents recommends a veterinary exam within 48 hours of acquisition, and many exotic practices advise an initial visit within 1 to 2 weeks of bringing a new small mammal home.

Costs vary by region, emergency status, and whether you see a general practice or an exotic-focused hospital, but these ranges are realistic for many US clinics in 2025-2026:

• Wellness exam: about $55-$95
• Technician nail trim: about $20-$45
• Fecal parasite test: about $30-$70
• Skin scraping or basic skin cytology: about $40-$90
• Dental evaluation for suspected disease: about $70-$150 for the exam portion
• Sedated or anesthetized dental trim / oral procedure: often $250-$700+, depending on monitoring, imaging, and repeat care needs
• Skull radiographs or advanced imaging: often $150-$600+ depending on modality and hospital

Ask for a written estimate before diagnostics or dental procedures. Guinea pig dental care can become ongoing in some cases, so it helps to discuss both the immediate visit and the likely follow-up plan.

See your vet immediately if your guinea pig stops eating, has open-mouth breathing, seems unable to chew, has severe itching with seizures or extreme pain, develops a swollen jaw, produces very small or no droppings, or becomes weak and unresponsive.

Guinea pigs can decline fast once appetite drops. Waiting overnight may change what treatment options are possible. If your regular clinic is closed, contact an emergency hospital that sees exotic pets.