Why Is My Hamsters Poop Green? 5 Things to Know

Having a pet hamster in the house can be heartwarming. They are small and cute. But they are also animals. Therefore, they suffer from physical inconsistencies at times. Among them, turning poop into a greenish color can be very common.

This physical inconsistency can be alarming at times. Therefore, You might want to understand the reasons behind this.

So, why is my hamsters poop green?

Your hamster poop can turn green due to unfamiliarity with the place or physical illness. Diarrhea, food poisoning, and poor hygiene are some common reasons. Even poor food can cause this. Also, consuming too much leafy green food can also turn their poop green.

Feeling alarmed? Don’t be. I have brought you an entire segment dissecting the reasons behind this issue. 

So, don’t hesitate. Dive in for a detailed breakdown of the hamsters’ diet.

Is it Normal For the Hamster to Have Green Poop?

In brief, No. It is not normal to have your hamster poop turning green. Having this issue addresses that something is wrong with the hamster’s dietary system or lifestyle.

The normal hamster poop should be;

  • Small 
  • Oblong 
  • Dry 
  • Firm 
  • Brown or Black 
  • Odorless 

You can look up hamster poop charts as well.

Also, if you identify their poop is leaving stains or smears that can signify their diarrhea. Diarrhea makes their poop moist. It can be lethal for the hamster if not treated timely.

To have your hamster pooping healthily, You will need to maintain a quality diet. They can consist of many things. Such as;

  • Formulated pellets 
  • Grains 
  • Seeds and Nuts 
  • Spray and Millets 
  • Fruits 
  • Vegetables

Although you have every right to be concerned if your pet hamster’s poop turns green. But don’t be worried that your hamster is dying. You need to identify what is causing this issue and bring necessary changes. 

Why Is My Hamster’s Poop Green?: 5 Main Reasons

As we have already mentioned, you need to find out the cause first. This goes before anything else.

So, let’s look at some of the reasons why a hamster might release green poop. 

Reason 1: Dietary Inconsistencies

Often new pet owners don’t understand a hamster’s dietary procedures. Therefore, dietary inconsistencies become a huge and common issue. This change in the color of stool can appear due to an inconsistent diet. 

Additionally, malnutrition can cause this problem too. A problem in their digestive system can lead to severe stomach aches as well. You can identify hamsters’ malnutrition by observing the hamster dragging their back leg while walking.

Also, consuming too much green leaf can turn the hamster’s poop green as well. Green fruits and vegetables contribute to the green poop hugely. But oftentimes, harmful green fruits and vegetables cause this issue more.

Some of the fruits and vegetables that you should refrain from giving to your hamster are-

  • Raw potato 
  • Tomato leaves
  • Raw kidney beans 
  • Potato tops
  • Buttercups 
  • Garlic
  • Sweets 
  • Onions
  • Chocolate 
  • Rabbit mix 
  • Toffee 
  • Rhubarb leaves

These vegetables can cause disruption to their digestive system. You should always avoid including them in their diet. 

Reason 2: Diarrhea

Diarrhea can also cause a hamster’s poop to turn green. Diarrhea can be caused due to many unhealthy reasons. These include hamster’s stomach infections, overconsumption of food, dehydration, and insufficient water intake. 

If your hamster is suffering from diarrhea then you will see watery green stool. It can lead to fatality at times and is essential to be treated immediately.

Diarrhea in hamsters can be induced by bacteria such as E.Coli, Campylobacter, and salmonella. It can also cause certain allergic reactions to foods.

Therefore, it is best if your hamster’s daily dietary system can be regulated properly. It will prevent lethal healthy issues as such. 

Reason 3: Cold Weather

Abrupt changes in the temperature can also make your hamster poop greenish. This effect is mostly seen in the winter days.

Furthermore, your hamster can fall sick in cold temperatures.

Adding some warm covers in their living space in winter can make their lives a little more comfortable. In a detrimental condition, you should concentrate more on your hamster’s care

Reason 4: Unclean Cage

An unhygienic environment can also affect the health of the hamster. This can also lead to green pooping. So, cleaning the cages with sanitary products on a regular basis is essential.

An unclean environment can produce harmful germs. It compromises the sanitary of the hamster. If your hamster is living in a squalor for a long time then bacteria can build up. This might jeopardize the dietary system of the hamster.

In a normal situation, you should spot clean your hamster’s cage daily. Additionally, doing a thorough cleaning in a week is essential.

Check out product recommendations if you are looking for some cage cleaning essentials.

These are some of the products that we can recommend. These are highly reliable and can give you the best value for your money. Also, they will ensure the best safety for your hamsters.

Clean the bedding as frequently as possible. In a dirty environment, hamsters are more prone to diseases. Built-up bacteria can reach the stomach and create health issues. A poor digestive system can cause abnormal pooping colors. 

Reason 5: Gallbladder Issues

Certain issues produce more bile than expectation. They can be lethal at times as well. In cases like this, the hamster’s feces can turn greenish. Taking your hamsters to the vet is essential if they are facing any gallbladder issues. 

Some other symptoms are appearing weak, lethargic, and disinterested in conducting movement.

While green poop can already be considered alarming, feeding too much food adds to it. Instead of having too much leafy food, maintaining a balanced diet is important. It’s good for your hamster’s health.

Also, maintaining a hygienic living space can cause them comfort too. Resulting in a regular digestive system.

Well, in these cases you should consult a vet just for peace of mind.


What color hamsters poop should be?

The average hamster’s poop should be brown and black. It should also be firm and should not leave any stain. Watery poop can be a reason for concern.

What does diarrhea look like in a hamster?

The most noticeable identification of diarrhea is the wet tail. Diarrhea can be fatal for the hamster.

Why is my hamster huddling in a corner?

Hamsters look for safety and huddle in a corner when they are uncomfortable or scared. Usually, they look for small and dark places for hiding. When they are ill, they do not want anything in their enclosure. That’s why you can see them huddling in the corner. 


That is everything you need to know about why is my hemster’s poop green? Hopefully, that cleared up your confusion.

Always contact the vet if your hamster is not behaving normally or you notice something odd.

Till then, have fun with your furry friend and have a beautiful day!

Ryan Dugan
Ryan Dugan
Ryan Dugan

Ryan Dugan is a dedicated pet care professional who offers top-notch services for a variety of pet species. He has a soft spot for my own feline companion, Sophie. He is passionate about animals He shares his knowledge and experience on his blog to help other pet owners understand and care for their own beloved companions. Whether you need a pet-sitting service or advice on pet care, He is the go-to expert.

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