Guinea Pig vs Hamster: 10 Differences to Help You Choose

Guinea pig or hamster? They look similar, but they’re very different pets.

Choosing the right one depends on your lifestyle, space, and how much daily interaction you can offer.

Guinea pigs are social animals that need a companion and live 5 to 8 years. Hamsters prefer living alone and typically only live 2 to 3 years.

Here are 10 key differences to help you decide.

10 Key Differences Between a Guinea Pig and a Hamster

Here are the 10 key distinguishing attributes that’ll help you decide whether to adopt a hamster or guinea pig.

1. What Is The General Difference of a Hamster vs Guinea Pig?

Origin

Both hamsters and guinea pigs belong to the order Rodentia.

In other words, both hamsters and guinea pigs are rodents, but they aren’t closely related and don’t share the same family.

Guinea pigs belong to the Caviidae family and hamsters are members of the Cricetidae family.

Guinea pigs originate from South America, while the first hamsters were seen in Syria.

There are 26 species of hamsters in the wild that live in parts of Europe, Asia, and the Middle East. Most hamsters kept as pets are Syrian hamsters.

Size

The first distinguishing feature of a hamster vs guinea pig is the size of these small animals.

Guinea pigs are bigger and heavier compared to hamsters, which is an important aspect when determining how much space you’ll need for your new pet.

Guinea pig cages are much larger than those you need for a hamster.

While hamsters grow between 5 and 15 cm, guinea pigs reach between 20 and 30 cm in size. Guinea pigs are generally 2-4 times bigger compared to hamsters.

Weight

While guinea pigs weigh around 1.5 to 2.6 pounds and hamsters only 1 - 10 ounces.

Guinea pigs need more room and more food compared to hamsters.

Life Expectancy

Unlike other animals kept as pets, hamsters and guinea pigs don’t live long.

On average, a guinea pig lives between 5 and 8 years, whereas a hamster usually lives 2 to 3 years.

Besides, guinea pigs live longer if you take proper care of them.

The oldest guinea pig ever was almost 15 years old before it died in 1979.

The life expectancy of these small and great pets is important when considering which of these two rodents to adopt.

Appearance

Compared to hamsters, guinea pigs have a more rounded body and they don’t have a tail.

Unlike hamsters that are born blind, guinea pigs can see almost immediately after their birth.

As for the colors, we can see a wide range of colorations in all kinds of species.

2. What is the Difference in Behavior of a Hamster vs Guinea Pig?

Although very distant cousins, hamsters, and guinea pigs share several features.

They differ in many as well.

Both hamsters and guinea pigs have their unique personalities so make sure to get to know your new pet.

Guinea Pig Behavior

As social animals, guinea pigs require company.

Guinea pigs tend to feel lonely and may suffer from depression.

For that reason, you should have more than one guinea pig in a cage.

A guinea pig might be very fond of you, but it needs the company of other guinea pigs as well.

Never keep male guinea pigs with female guinea pigs unless you’re hoping for a new litter of cute baby guinea pigs.

The best option is to have at least two to three female guinea pigs, as they don’t argue like males do when placed together. Unlike guinea pigs, hamsters are territorial and shouldn’t be kept with other hamsters.

Be loving and caring towards your guinea pig so it can show you all the affection it feels for you. It takes some time for a guinea pig to get comfortable with the environment and the people in the household, and then you’ll be able to cuddle with them.

Although guinea pigs need four to six hours of sleep to stay healthy, they only sleep for seconds to minutes at a time. That’s why new owners feel like guinea pigs never sleep.

New pet owners should know their guinea pig sleeps often but in very short intervals.

Although you’ll need larger cages for your guinea pigs, as they’re bigger when compared to hamsters, they’re more fragile.

Guinea pigs have weaker spines, so you need to handle them carefully with both hands.

Hamster Behavior

Hamsters usually love to be alone. They aren’t very social creatures.

However, they can also be loving and affectionate to humans.

Unlike a guinea pig, a hamster might bite you if you don’t build trust properly at the beginning.

It’s necessary to interact with hamsters daily to form a relationship. They’re small animals, and you can hold them comfortably with one hand.

Another quality that differs hamsters and guinea pigs is that hamsters tend to be more active during the night.

Unlike guinea pigs, which are crepuscular (most active at dusk and early morning), hamsters are nocturnal creatures.

Be careful when introducing a hamster’s habitat to other pets. Hamsters can become very aggressive, even against other hamsters.

3. How Do Hamsters and Guinea Pigs Vocalize Their Needs?

Guinea pigs and hamsters can vocalize their mood and express their behavior in different ways.

Guinea Pig Vocalization

Usually, a guinea pig will produce three types of sounds: wheek, purr, and chirp.

You can hear a “wheek” when a guinea pig is happy and delighted, maybe when you get home and your pet welcomes you or maybe asks for food.

It’s a common sign of happiness in guinea pigs.

A “purr” coming from a guinea pig can imply satisfaction or annoyance depending on the tone, and it can even mean fear in some cases.

A “chirp” is a sound that doesn’t have an explanation. The reason behind this sound is unknown.

Hamster Vocalization

Hamsters can also express their emotions.

Squawk is some kind of warning.

A hamster might squawk when you are holding it in the wrong way and it’s trying to alert you about it.

Scream is a common sign of fear in hamsters.

A hiss implies aggression. Hamsters are aggressive compared to guinea pigs.

4. What Is the Difference in Hamster vs Guinea Pig Diet?

Both hamsters and guinea pigs are great pets.

However, there’s a significant difference in guinea pig vs hamster diet as well.

Guinea Pig Diet

Guinea pigs are herbivores and their main dish is hay, grass, and different kinds of fresh vegetables. They need an unlimited amount of hay and water daily.

Since guinea pigs can’t produce vitamin C on their own, you need to include sufficient fresh vegetables and fruits rich in this vitamin. Check out the best foods high in vitamin C for guinea pigs.

Both hay and pellets are important to prevent problems with overgrown teeth. You might opt for vitamin C supplements made for guinea pigs, or pellets enriched with this vitamin.

Not everything healthy for humans is healthy for guinea pigs. Feed them plenty of broccoli and spinach to reduce the risk of scurvy.

Guinea pigs also digest their fecal matter, a process called coprophagy, which gives them extra vitamins.

Just remember: guinea pigs can’t digest meat, dairy products, or any type of processed foods.

Hamster Diet

Hamsters are omnivores and eat plants, worms, and insects.

You can feed your hamster with commercial hamster pellets that you can buy in pet shops, small amounts of fresh fruit, vegetables, or herbs.

Likewise, your hamster can eat timothy hay and get some treats such as nuts or mealworms.

Hamsters obtain every necessary vitamin through their diet and don’t require any extra ingredients.

The general recommendation is to feed hamsters 10 grams of food a day and it should include at least 5% fat and 16% protein.

One interesting fact about hamsters is that they have pouches in the cheeks which they use to store some food for later.

5. What Are the Common Health Issues in Hamsters and Guinea Pigs?

Every home pet requires proper health care to prevent problems. Both hamsters and guinea pigs need your care and attention.

Guinea Pig Health

It’s not hard to take care of a guinea pig. These small animals are quite sturdy, so if you take care of their diet, you shouldn’t have any problems.

An unbalanced diet can create digestion problems, which can complicate the situation and cause many other issues. Both bloating and unexplained diarrhea are signs that something’s wrong, so take your pet to the vet immediately.

To make sure your pet stays healthy, keep its habitat clean.

Hamster Health

On the other hand, hamsters may develop some serious diseases.

The most common condition is called a “wet tail.”

The symptoms include wetness on the anal and tail areas and watery diarrhea. They can also lose appetite and develop infections.

This is the most serious illness in hamsters, and you should treat it quickly or it may be fatal.

Another minor health problem in hamsters is skin conditions.

Also, they can host parasitic insects.

The usual life span of a hamster is 2-3 years.

6. What is the Difference between Hamster vs Guinea Pig Cages?

Make sure to decide whether you prefer a hamster or guinea pig before you decide to buy a cage.

Both small animals kept as pets live indoors, so the space in which they spend their life makes a major difference to their wellbeing.

A hamster doesn’t need as much room as a guinea pig, but it surely needs more toys. Guinea pigs can’t climb well, though they can jump, especially when they’re young.

Your hamster will need less space, but it’s more agile compared to a guinea pig.

Guinea Pig Cages

A guinea pig needs 7.5-10.5 square feet of living space.

These small animals need spacious enclosures and a much bigger cage compared to hamsters.

They need to feel comfortable and enjoy some personal space.

Your guinea pig pet has short legs and it can’t jump well or climb steep objects.

Nonetheless, guinea pigs require space and a hiding place to feel comfortable.

Most pet store cages are small and don’t meet the minimum requirements. A cage bought at a pet store can only be suitable for baby guinea pigs for the first few weeks, but you should expand the habitat as they grow.

For a start, check out some of the cages for small spaces.

Hamster Cages

As mentioned earlier, hamsters aren’t very social creatures. They enjoy solitude, so hamster cages aren’t a big problem regardless of your home’s size.

The habitat of a hamster can be a minimum of 2-3 square feet.

They don’t need a lot of space, but studies have shown they’re much happier and live longer in bigger cages. Both small pets need bedding to stay comfortable and healthy.

7. What is the Difference in Physical Abilities: Hamster vs Guinea Pig?

Hamsters and guinea pigs differ physically as well.

Climbing

Guinea pigs aren’t good climbers.

Some people might get confused by this, but this is true!

They don’t use their paws to climb and pull themselves up.

Instead, they’re good at jumping.

On the other hand, hamsters are quite enthusiastic about climbing and they love to scale up the bars in the cage.

Running

It’s physically impossible for a guinea pig to run on a wheel, and it’s extremely harmful to their health. Their body structure doesn’t allow it, and it can cause permanent damage.

Hamsters love to have fun on an exercise wheel, so make sure to install one in their cages. They’re very good runners, and their small body lets them run all day happily.

Exercise Balls

One more warning: don’t use exercise balls for guinea pigs!

It requires backward arching of the spine, and their body isn’t built for this. Hamsters and other small animals have no problem with it, but don’t use exercise balls for guinea pigs.

8. How to Care Daily for Hamsters and Guinea Pigs?

Daily Care of Guinea Pigs

As guinea pigs eat a lot more food, cleaning their cage takes more time.

You need to clean their cage at least twice a day from their leftovers.

Also, you need to interact and play with them every day as they’re extremely affectionate animals.

Daily Care of Hamsters

A similar routine applies for hamsters as well with some small additions.

Hamsters are relatively aggressive, so you need to interact with them carefully every day to build trust. Unlike guinea pigs, it’s not necessary to provide fresh food every day for hamsters, but it’s still a good idea to balance their diet.

Experts also suggest letting hamsters out of the cage at least once a week to give them more space.

9. Are Guinea Pigs and Hamsters Good Pets for Children?

Which pet is the right pet for a child, depends on your child’s age.

Hamsters are a convenient choice for children for several reasons. They’re cute and lively, which is attractive to kids who enjoy playing with them.

However, a hamster is a nocturnal animal, which means hamsters aren’t the best option for small children. They can be relatively hard to manage and keep entertained during daytime hours.

On the other hand, guinea pigs are much easier to handle despite their bigger size. They don’t run around as much as hamsters do, so your child will have a more fun time playing with them.

Just remember that a guinea pig is more fragile, so handling them requires gentleness.

10. What is the Difference in the Cost of Keeping Hamsters and Guinea Pigs?

Guinea pigs cost between $20 to $40, while hamsters cost between $10 and $20. The cost of the cage can be a bigger issue, since guinea pigs are larger and their cages are more expensive.

On the other hand, guinea pigs don’t need as many toys and accessories as hamsters do. Feeding these two small pets costs about the same.

Another thing to consider is the cost of vet care. Guinea pigs are more frequent visitors to the vet compared to hamsters, and most guinea pig owners take their pets for an annual wellness exam.

Hamsters don’t require these kinds of exams. Overall, guinea pigs are more expensive to keep.

Final Thoughts

Both guinea pigs and hamsters are great pets for new and experienced owners alike. They’re easier to care for compared to cats and dogs, and they’ll bring plenty of joy to your home.

With your help, young children can learn to love and care for animals, which is crucial for their development. Whichever pet you choose, the best one is the one that fits your lifestyle.