ocp guinea pig guide tablet mockup

Get Your FREE Owner's Guide For Guinea Pigs And Help Your Special Friend Live its Best Life.

Can Guinea Pigs Be Allergic to Timothy Hay?

Some guinea pig owners notice their furry friends sneezing when they add hay to the cage. 

It is easy to see why pet owners assume their guinea pig is allergic to Timothy Hay. 

However, guinea pig allergies are rare, especially when it comes to hay, as this is their primary food source. 

Many types of guinea pig hay produce dust that may make your cavy sneeze. 

It is rare for guinea pigs to be allergic to Timothy Hay. Most sneezing from cavies is due to dust from feed or other guinea pig supplies like bedding. Switch to alternatives like Orchard grass if there are health issues from the Timothy grass. Owners are more likely to be allergic to hay.  

If you feel your guinea pig has allergies, take them to the vet for a professional opinion. 

Let’s dive into whether or not your guinea pig can be allergic to Timothy Hay and what to do if they are. 

can my guinea pig be allergic to timothy hay

Is My Guinea Pig Allergic To Timothy Hay?

If you’ve noticed your beloved guinea pig sneezing a bit, you may wonder if they have allergies. 

Many pet owners see an increase in sneezing when they add hay to their guinea pig cage. 

While it is easy to assume this is an allergy to Timothy Hay, this is not usually the case. 

Most types of guinea pig hay and guinea pig bedding produce dust. 

This easily makes cavies sneeze. 

It also causes other issues like conjunctivitis in guinea pigs.

While guinea pigs are usually not allergic to Timothy Hay, many owners experience reactions to the pollen. 

If this is the case, you’ll need to find alternative hay. 

It is essential to find one capable of meeting your guinea pigs’ nutritional needs while avoiding an allergic reaction. 

There are many ways to see an allergy in guinea pigs. 

Sometimes it causes sneezing or other respiratory issues in guinea pigs. 

Other times you’ll notice rashes or eczema in guinea pigs. 

While there aren’t many common guinea pig allergens, it’s important to note if you see any reactions. 

If you think your guinea pig is allergic to Timothy Hay, switch to an alternative and see if the health issues continue. 

It is also good to bring them to a vet to get a professional opinion and advice. 

Alternatives To Timothy Hay

If you want to switch from Timothy Hay, there are many alternatives. 

Hay makes up 80% of your guinea pig’s diet. 

This makes finding a suitable replacement critical. 

You don’t want your adult guinea pig to become malnourished or experienced vitamin deficiency. 

Here are some great alternative types of guinea pig hay to use. 

Check out our complete list of Timothy Hay alternatives if you need to switch for more ideas than below. 

Orchard Grass

Orchard grass is one of the most popular alternatives for guinea pigs. 

It is significantly less prone to causing allergic reactions and has very similar nutrients to Timothy grass. 

Orchard grass is also very accessible in most places, and most pet stores carry it in the small animal section. 

Oat Hay

Like Orchard grass, Orchard hay is another excellent choice among guinea parents. 

It is less likely to cause an allergic reaction in guinea pigs. 

It is a great option for providing unlimited access to healthy hay without triggering allergies in guinea pigs or their owners. 

Meadow Hay

Meadow hay is a mix of blades of grass, flowers, and plants. 

Your guinea pig will find it delicious, and gnawing on the mix will help their dental health. 

However, since meadow hay is a mix, it is difficult to determine a consistent nutritional profile. 

This means you won’t be sure Meadow hay satisfies all the nutritional needs of a balanced diet for your guinea pigs. 

It is okay to use sometimes but should not be the main source of hay for your pets. 

Alfalfa Grass

Alfalfa grass is a delicious and wonderful choice for guinea pig owners. 

It has high calcium levels, and most cavies love the taste. 

It is an easy favorite amongst guinea pigs. 

However, it tends to be fattening and does not contain all the diverse nutrients and vitamins of other options. 

It makes an excellent occasional treat but shouldn’t be the main hay unless advised by a veterinarian. 

How Much Hay Should I Give My Guinea Pig?

Guinea pigs should eat mostly hay; about 70-80% of their diet should be hay. 

This means pet owners should provide unlimited access to hay in the cages. 

Pellet food and vegetables are great but should only make up 20-30% of their diet. 

Let’s look into a detailed guinea pig food pyramid so you know how much to give your guinea pig to keep them healthy. 

Guinea Pig Food Pyramid

Knowing how much food to provide your guinea pigs is important for being a responsible pet owner. 

In addition to fresh water, it is beneficial to provide diverse food sources to keep your pet healthy. 

It is tempting to give guinea pigs a bunch of tasty snacks, but this isn’t good for their health and well-being. 

Here is a breakdown of how much hay, pelleted food, and vegetables to give your guinea pig. 


Hay is the most important part of a guinea pig’s diet and digestive health. 

It should make up between 70-80% of their diet. 

Make sure there is always hay in your guinea pig’s cage. 


High-quality pelleted food should only make up 10-15% of your guinea pig’s diet. 

Too many pellets are fattening and lead to guinea pig obesity and other health issues. 

While they are fantastic for dental health, they shouldn’t be the main food source. 


One of the most enjoyable parts of owning a guinea pig is watching them munch down on vegetables. 

There are many very healthy vegetables to give to your guinea pig as an occasional treat. 

Vegetables and greens should make up 5-10% of their overall diet. 

Dandelion greens and lettuce are common plant foods to give as snacks. 

Other Reasons For Guinea Pig Sneezing

One of the most common symptoms of allergen in guinea pigs is caused by bedding material. 

The dust in bedding causes bronchitis in guinea pigs or asthma symptoms in extreme circumstances. 

It is important to always keep bedding clean and never allow guinea pigs to exist in a filthy environment. 

Pine bedding and aspen bedding are notoriously dusty bedding options for guinea pigs. 

It is important to keep track of allergy symptoms. 

Using a symptom tracker will help determine if it is a food allergy or grass allergy symptoms. 

Leave a Comment