Guinea Pig Dental Health: How Many Teeth Do They Have and How to Keep Them Healthy

Owning a guinea pig means caring for every aspect of their well‑being, and dental care is essential to prevent painful illnesses and costly vet visits. New owners often overlook how critical it is to monitor their pet’s teeth.

Adult guinea pigs possess a total of 20 teeth, all of which continue to grow throughout life. Proper dental hygiene is mandatory to keep these teeth in optimal condition.

How Long Should a Guinea Pig’s Teeth Be?

Guinea pigs have four incisors—two upper and two lower. Their molars and premolars lie in the cheek area and are not visible at a glance. Ideal incisor length ranges from ⅓ to just over ½ inch, meeting evenly without gaps or overlap. Because their teeth grow continuously, regular inspection is key to detect overgrowth early.

Providing Sufficient Chew Substances

Hay is the cornerstone of a guinea pig’s diet. It offers high fiber, low calories, and the chew needed to wear down their teeth. Timothy hay is the preferred choice, while alfalfa and clover should be fed sparingly due to higher calories and calcium.

Pellets should supplement hay. Look for fortified pellets that contain essential vitamins, especially vitamin C, and avoid low‑quality options packed with fillers.

Crunchy fruits and vegetables can serve as tasty treats while aiding dental wear. Safe options include carrots, apples, cucumbers, and Brussels sprouts. Avoid foods that are toxic—garlic, onion, avocado, potato, etc.

Recognizing Malocclusion

Malocclusion—misalignment of teeth and jaws—can become a serious health issue. Symptoms include:

• Eye or nose discharge
• Weight loss or anorexia
• Perpetually open mouth to relieve pressure
• Drooling around the mouth and chin
• Chewing on one side only
• Dropping or struggling with food

Immediate veterinary attention is essential if any of these signs appear.

Preventing Tooth Breakage

Guinea pig teeth are naturally white. Yellowing often signals vitamin C deficiency, which can weaken teeth and lead to fractures. Since guinea pigs cannot synthesize vitamin C, they depend on dietary intake.

High‑Vitamin C Foods for Guinea Pigs

Offer small portions of the following, no more than once or twice a week:

• Red bell pepper – 1‑2 tablespoons per day (high in vitamin C)
• Orange (peeled) – 1‑2 slices, up to twice weekly
• Cherry tomato – 1 per day or up to 5–6 times a week (avoid leaves)
• Strawberry (with leaves) – a small or half‑medium piece, twice weekly
• Low‑sugar veggies up to 1 cup, 5 times a week

Do Guinea Pigs Regrow Teeth?

Yes, their teeth grow continuously. However, loss or severe damage must not be ignored. Prompt care can mitigate discomfort and potential complications.

Safe Chew Materials

In addition to hay, guinea pigs benefit from chewing wood. Select non‑toxic varieties such as aspen, hickory, maple, or oak. Avoid pine, cedar, and other aromatic woods that may be harmful.

Keeping Your Guinea Pig’s Teeth Healthy

Regularly inspect for overgrown or broken teeth, ensure a balanced diet rich in fiber and vitamin C, and provide plenty of chewable items. Early detection of dental issues protects your pet’s comfort and saves veterinary costs.