10 Guinea Pig Facts Every First-Time Owner Needs

Just brought home your first guinea pig? There’s more to their care than most people expect.

These aren’t set-and-forget pets.

Guinea pigs need 30 to 50 mg of vitamin C per day because they can’t produce it on their own. They’re social, sensitive, and surprisingly vocal once they get comfortable around you.

Here are 10 facts every new owner should know.

1. Guinea Pigs Require a Comfortable Living Space

Guinea pigs aren’t suited for a small cage. They need plenty of space to live, roam, and run around.

Large space is especially important if you have more than one pet guinea pig sharing the same living space. You can place them outdoors in a hutch, but only if the area is comfortable, waterproof, and predator-free.

The hutch shouldn’t be exposed directly to sunlight since guinea pigs can’t tolerate extreme temperatures.

That said, don’t let your piggies live outside, especially during the winter months.

If kept inside, guinea pigs need a relatively quiet area without sudden and loud noises. Regardless of whether your piggies live in a hutch or a cage, separate their sleeping area.

Guinea pigs need a hideout, a place where they can withdraw and hide to feel safe.

You should regularly change the hay and bedding to maintain proper hygiene and keep the space odor-free. Dirty bedding is responsible for infections in guinea pigs, including bumblefoot, which causes painful swelling on their feet.

Learn about the best bedding for allergies and the best bedding for odor control.

2. Guinea Pigs Need a Balanced Diet

Guinea pigs have a sensitive gastrointestinal tract. They’re prone to digestive issues and can suffer from diarrhea and bloating, which can be life-threatening.

Hay

To keep their digestive system healthy, guinea pigs need non-dusty hay available at all times. Feed your baby guinea pig alfalfa hay and gradually add timothy hay or orchard grass until you eliminate alfalfa.

Alfalfa is rich in calcium, and adult guinea pigs can’t tolerate much of it. Excess calcium accumulates in their bodies and leads to kidney and bladder stones.

Bladder stones often require surgery and are especially dangerous to male guinea pigs.

Timothy hay and orchard grass hay are low in calcium and high in fiber. Orchard hay is softer, but these two are on par with nutrients.

Fruits and Vegetables

Apart from hay, other guinea pig food is probably something you already have in your kitchen. Guinea pigs require about 1 cup of a mix of fruits and vegetables to get all the nutrients they need.

Vitamin C is crucial in a guinea pig’s diet. Guinea pigs can’t produce their own vitamin C, so they need it through fresh, raw vegetables and some fruits.

Vitamin C deficiency (scurvy) is potentially fatal if left untreated. Check out our guide to foods high in vitamin C for the best options.

Feed guinea pigs fruits only in limited quantities as a sweet treat. Their sensitive digestive tract can’t digest sugars well.

Never feed your guinea pig meat, dairy products, frozen raw food, processed food, or sweets.

Make sure to feed your guinea pigs only foods that are safe for them. Food that’s healthy for humans isn’t always healthy for guinea pigs.

Guinea pigs also need 1/8 of a cup of guinea pig pellets fortified with vitamin C, which you can buy at a nearby pet store.

Feeding Guidelines

You can’t overfeed your piggy with hay, but you can offer too much fruits and vegetables. Stick to the recommended serving size to prevent overfeeding.

When introducing new foods, do it gradually over a week to prevent upsetting their digestive system. If your guinea pig doesn’t eat the produce you’ve served, remove it within an hour or two to prevent bacteria growth.

Replace stale water several times a day. Make sure your pet always has clean and fresh water in its water bowl or bottle.

Some guinea pig owners prefer water bottles over bowls. Guinea pigs collect wood shavings, hay, and waste that can soil the water in open bowls.

They may also tip over the bowl, leaving them thirsty when no one is home. This also makes it harder to track water consumption, which matters when monitoring for health issues.

3. Guinea Pigs Need Vitamin C

Vitamin C is essential because guinea pigs can’t store or synthesize it, just like us. This vitamin promotes proper body function and a strong immune system.

Without enough daily vitamin C, scurvy can develop within 60 to 90 days. Scurvy affects your guinea pig’s bones and joints, causing painful swelling as cartilage and bone formation becomes abnormal.

This vitamin is vital for creating collagen, a structural protein that maintains blood vessels, supports bone formation, and heals wounds. In guinea pigs, scurvy is potentially fatal.

Guinea pigs with a severe deficiency bleed around the gums, teeth, skin, and internal organs. This makes it incredibly painful for cavies to move and chew their food.

Experts estimate that humans require 75 to 90 mg of vitamin C per day to avoid scurvy. For guinea pigs, include at least 30 to 50 mg/kg of vitamin C in their daily diet.

Some owners prefer giving vitamin C supplements like tablets. We recommend that only if you’re sure your pet doesn’t get its daily dose through vegetables and fruits.

Guinea pig food fortified with vitamin C is unstable. It easily degrades under certain conditions, and within three months of manufacture, such food can lose half of its vitamin C.

4. Guinea Pigs Are Social

Guinea pigs are social creatures. They need company and love having you around.

They also crave the company of their own species.

No matter how much you love each other, you can’t learn to speak the same language. Your guinea pig needs a representative of its own kind.

There’s nothing wrong with owning one guinea pig, but a solo guinea pig can feel lonely and even suffer from depression.

Most people have at least two guinea pigs. That way, while you’re at work or running errands, your guinea pigs have each other for company.

Just make sure your pets have enough space. Overcrowding makes them susceptible to infections and diseases.

5. Guinea Pigs Are Sensitive

Common problems in cavies include skin infestations accompanied by hair loss, urinary problems, scurvy, respiratory infections, digestive issues, and corneal ulcers. Aging, dental disease, reproductive disorders, injury, or improper care are other common causes of health problems.

Infectious diseases caused by viruses and bacteria are most commonly found in guinea pigs that live in groups. Skin infestations like fleas, mites, and lice usually occur in piggies living with other animals.

Although guinea pigs might get intestinal parasites such as worms, that rarely happens. The fact that guinea pigs are more sensitive to antibiotics than other pets complicates the treatment of infectious diseases.

It’s critical to prevent health problems in guinea pigs. Here’s what you can do:

• Provide a consistent, balanced diet that’s safe for them
• Make sure they always have clean water
• Provide a low-stress environment
• Keep their habitat clean (frequently clean and disinfect the cage)
• Use only bedding materials gentle on your pet’s skin
• Provide chew toys, balls, tunnels, and ramps for adequate exercise
• Watch for changes like hair loss, lack of appetite, weight loss, bloating, or unusual discharge from the eyes

You can learn much about your guinea pig’s health by paying attention to its poop. Speaking of poop, guinea pigs have an unusual habit of eating their own feces.

Don’t worry, that’s normal for these small animals.

6. Guinea Pigs Usually Sleep With Eyes Wide Open

Many pet owners haven’t seen their piggies close their eyes ever. Some believe guinea pigs never sleep or that they’re nocturnal animals.

That’s not true. Piggies are crepuscular animals, which is why there’s a lot of activity going on in your guinea pig’s cage at dusk and dawn.

Guinea pigs sleep 4 to 6 hours per day, dozing off for 10 to 30 minutes at a time both during the day and at night. They usually sleep with their eyes open and may snore or make other noises while sleeping.

As prey animals at the bottom of the food chain, they’re light sleepers, naturally cautious and aware of their surroundings. They rarely sleep for long periods at once.

While guinea pigs in captivity sleep slightly longer than those in the wild, they still sleep less than dogs and cats.

7. Guinea Pigs Need to Wear Down Their Teeth

The teeth of guinea pigs grow continuously throughout their life. Guinea pig teeth should be white rather than yellow, as they’re in most rodents.

They shouldn’t be too long or curved, and piggies shouldn’t show signs of pain while eating.

If your guinea pigs eat normally without signs of stress or discomfort, their teeth are in good shape.

Although your piggy looks like it only has two upper and two lower incisors, guinea pigs actually have twenty teeth. Apart from the incisors, there’s a pair of upper and lower premolars and three pairs of upper and lower molars.

If a guinea pig has teeth problems, it suffers greatly from mouth sensitivity, redness of the gums, and constant pain while eating. Almost always, the cheek teeth are affected too.

To keep your guinea pig’s teeth healthy, all you need is unlimited supplies of low-calcium hay. At pet stores, you can also buy chew toys safe for guinea pigs, usually made of compressed hay.

Hay serves as a great supply of fiber that aids digestion, and works as a natural teeth trimmer. Many pet owners make sure their piggies have clean tree branches to gnaw on.

Be careful, as some trees are unsafe for guinea pigs and other rodents. Don’t give your pet wood from the Prunus family trees (almond, apricot, cherry, nectarine, peach, and plum).

Guinea pig pellets fortified with vitamin C are also hard enough to help wear down teeth.

8. Guinea Pigs Should Exercise Regularly

Guinea pigs need enough space to roam because exercise is vital for cavies. Like all animals, guinea pigs get bored.

You need to give them as much fun as you can to encourage them to stay active.

One way to keep them entertained is to create obstacles, add ramps, and give them balls they can push around the cage. Guinea pigs are smart, and new challenges stimulate their brains and keep their curious minds active.

Guinea pigs aren’t runners and they aren’t great climbers, but obstacles, elevated areas, and tunnels present a fun challenge. Never attempt to place your guinea pig in an exercise wheel.

Piggies aren’t hamsters and they can get seriously injured. Keep your guinea pigs safe from obstacles and toys that may harm them.

9. Guinea Pigs Are Usually Kept in Single-Sex Groups

There’s a reason why guinea pigs are kept in single-sex pairs. It’s not that females don’t get along with males.

The main reason is their reproductive cycle and the age at which they reach sexual maturity.

Both female and male guinea pigs can become sexually mature when they’re just a few weeks old. It’s not advisable to breed very young guinea pigs, just as it’s not advisable to breed females after they reach 7 months of age.

Guinea pigs don’t menstruate, so it’s impossible to predict when they’re ready to mate.

According to estimates, the mortality rate of pregnant guinea pigs is as high as 20%. Experienced owners who’ve bred their piggies before may be able to lower that rate through proper feeding and catching symptoms of problems like toxemia early.

Baby guinea pigs are born large and fully furred. They can see, hear, and run almost instantly.

Usually, the mother carries more than 2 pups, which doubles her weight and puts a huge strain on her body. Even with the best care, a pregnant piggy can suffer from dystocia, hypocalcemia, prolapsed uterus, or toxemia.

A guinea pig can get pregnant within 12 hours of giving birth. That’s another reason why males and females shouldn’t share a cage.

Even if you have your male guinea pig neutered, keep it apart from the female for some time. Neutering doesn’t prevent new pregnancies instantly.

Don’t avoid trips to the vet. Instead of trusting an internet forum, trust a professional.

Take your pet to regular checkups. A veterinarian can run proper tests, prescribe the right medicine, and provide advice on caring for your guinea pig.

10. Guinea Pigs Require Commitment

A guinea pig typically has an average lifespan of around 4 to 8 years. While some guinea pigs don’t live very long, others can thrive much longer in a healthy environment.

Simply keeping them in a cage with food and water without meeting their needs isn’t enough for a happy, healthy pet. Take your time to learn as much as you can about guinea pigs and then get to know your guinea pig.

Every guinea pig is different and has its own personality.

One of the most important ongoing tasks is maintaining your pet’s surroundings:

• Regularly clean the cage and change bedding
• Clean your pet’s water bottles and food bowls often
• Ensure they always have clean, fresh water (change it a few times a day)

Bonus: Guinea Pig Starter Kit Essentials

Before you bring your new pet guinea pig home, make sure to have the following:

• Guinea pig cage
• Bedding
• Water bottle or water bowl
• Guinea pig pellets
• Food bowl
• Hay
• Hay rack or hay feeder
• Hideouts
• Carrier

We recommend doing some research to find the best options on the market. Many guinea pig starter kits don’t include what your pet really needs.

What if your pet would rather drink from a bowl instead of a water bottle? What if a separate hay rack is a better option than the one included in the cage?

What if you don’t have much room but would still like to own a guinea pig?

There are many questions and many different opinions. Feel free to browse through our website for guidance, information, and the best accessories on the market.

Final Thoughts

Before adopting any pet, make sure you have the time and willingness to commit. Learn as much as you can about guinea pig care and make your home a welcoming place for the new member of your family.

When your pet arrives, take time to get to know its personality. Every living being is different, but all share one thing in common: they need love, affection, time, and dedication.