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How to Choose The Right Pet Oxygen Cage

dog in oxygen cage

Introduction to Pet Oxygen Cages

Pet oxygen cages, like the Buster ICU Oxygen Cage, can be used to provide extended oxygen therapy to your pet at home to treat various conditions, including pneumonia, congestive heart failure, cancer, collapsing trachea, feline asthma, and more.

💡 Did you know


Did you know that hyperbaric oxygen therapy, commonly used in human medicine for conditions like decompression sickness and severe infections, is also available for pets? This treatment involves placing the pet in a pressurized chamber and administering 100% oxygen. Hyperbaric oxygen therapy (HBOT) can accelerate healing in pet suffering from a variety of conditions, such as severe wounds, certain types of infections, and even neurological disorders. It's like giving your pet a supercharged boost of oxygen to help their body heal more efficiently!

4 Things to Consider When Selecting an Oxygen Cage for Your Pet

Number 1: Select the Correct Size Cage

Be sure to choose a pet oxygen cage size that fits your pet and your oxygen source. Bigger oxygen cages require higher oxygen flow rates to work correctly.


The small Buster ICU Oxygen Cage is 18"x13"x13" and is for pets under 10lbs. This cage requires a 5 Liter flow rate to create a safe environment for your pet.


The medium Buster ICU Oxygen Cage is 24"x18"x18" and is for pets up to 25lbs. This cage size also requires a 5 Liter flow rate.


The large Buster ICU Oxygen Cage is 44"x26"x26" and is for pets up to 70lbs. This cage size requires a flow rate of 10 Liters to create a safe environment.

Number 2: Does Your Pet's Oxygen Cage Have an Oxygen Supply Connection?

A medical-grade oxygen concentrator is required to supply a pet oxygen cage and create a safe environment for your pet. If you notice that the oxygen cage you are looking at does not have a place to hook up an oxygen supply, like a concentrator, it is most likely not medical grade, and can be dangerous for your pet. 


You'll need an oxygen concentrator to supply oxygen to the pet oxygen cage to ensure your pet is receiving a high turnover of fresh oxygen the entire time they are receiving therapy. A medical-grade oxygen concentrator is able to provide a continuous flow of oxygen by pulling in room air and filtering out the other gases from the oxygen. The oxygen is then used to give therapy. 


With the assistance of the Venturi adapters that come with the Buster ICU oxygen cage, you can also set the concentration of oxygen, depending on your veterinarians recommendations. For example, may pets with heart conditions need a 60% oxygen saturation. By using the correct Venturi adapter, the oxygen cage will fill with 60% pure oxygen and 40% room air. The most common oxygen saturation for pets is 40%.

Number 3: Does Your Pet Oxygen Cage Allow You to Adjust The Oxygen Saturation Level? 


Make sure your cage or chamber allows you to set the oxygen saturation in the cage. Too high or too low can be dangerous for your pet. The best pet oxygen cages on the market provide pet owners with a way to adjust the saturation level to customize their pet's care, like the Venturi adapters that are included with the Buster ICU Oxygen Cage.


Number 4: Does The Pet Oxygen Cage Prevent Dangerous Carbon Dioxide Build-up?


Your pet expels carbon dioxide with every breath. Make sure your cage has a way to prevent dangerous carbon dioxide buildup. Simply venting the cage may not be enough. With the Buster ICU Oxygen Cage, we recommend venting. Additionally, the Venturi adapters increase the airflow into the oxygen cage, which in turn helps to ensure a fresh supply of oxygenated air into the cage during the entire therapy session. This helps to push old, CO2 filled air out of the vent you created. It also helps to rid the cage of excess heat and humidity, which can exacerbate symptoms of respiratory distress.

How to Select the Correct Oxygen Cage Size for Your Pet

Your pet’s weight is a helpful guideline for selecting the size of the pet oxygen cage, but it’s important to measure your pet’s height and length to ensure that you are purchasing the correct size cage. Compare your pet’s measurements to the dimensions of the cage and make sure your pet has a few inches on each side to move around. Remember that adding comfort items like a favorite bed or blanket, and even a dish of food and water, can help pets more readily accept being in the oxygen cage, and plan the size accordingly.

How to Do I Supply Oxygen to My Pet Oxygen Cage?

In all cases, we recommend using a medical-grade oxygen concentrator to supply your pet oxygen cage. Oxygen tanks or cylinders will run out of oxygen very quickly at the required flow rates, making them a less cost-effective option. Oxygen concentrators are extremely safe to use at home in comparison to tanks or cylinders, as they create oxygen but do not store it under high pressure.


When selecting an oxygen concentrator, make sure that your unit is medical-grade and has a continuous flow of oxygen, not a pulse dose. This ensures that your oxygen concentrator can supply the required flow rate of oxygen at the correct purity in order to provide a safe environment for your pet.

Medical-Grade Vs. Non-Medical-Grade Oxygen Concentrators


Pawprint Oxygen has rigorously tested many concentrators, and have confirmed that a constant flow rate of 5 Liters Per Minute of medical-grade oxygen is needed to supply the small and medium-sized Buster ICU Oxygen Cages. The large size cage requires 10 Liters per minute of medical-grade oxygen. Using lower flow rates or lower purity oxygen can be dangerous for your pet. We’ll talk about that more below.

medical grade vs. non medical grade oxygen concentrators

How to Select the Correct Oxygen Level for Your Pet's Oxygen Cage


Room air contains 21% oxygen. The goal of oxygen therapy is to increase the level of oxygen in the bloodstream by providing an enriched supply of oxygen to the patient. Different patients may require different oxygen levels (also called oxygen saturation) based on their condition. You should consult your veterinarian to determine the best oxygen level for your pet. Below, we’ll go over some general guidelines that may apply to your pet.


In a veterinary hospital, the most common oxygen level used is 40%. This is considered a safe level because it is below the level at which oxygen toxicity (too much oxygen) can occur but is still higher than room air. Your pet oxygen cage should include a way to set the level of oxygen in the cage without adjusting the flow rate of the oxygen supply .

kitten in an oxygen cage

Be Careful of Oxygen or Carbon Dioxide Toxicity in Your Pet's Oxygen Cage


It’s important to keep your oxygen concentrator at the flow rate that is recommended for your cage size. Too little or too much oxygen can be dangerous. 


Oxygen toxicity, also known as hyperoxia, can result if a pet is exposed to 100% oxygen for more than 24 hours, or >60% oxygen for more than 48 hours. Risks include lung damage and symptoms are similar to respiratory distress. Additionally, not providing enough oxygen into the cage will allow the carbon dioxide (CO2) your pet is expelling to build up to an unsafe level. Make sure you are always running the oxygen concentrator at the appropriate flow rate, ensuring that you vent the cage at all times.

Inflammatory injury is caused by toxic metabolites of oxygen, including oxygen free radicals and superoxide molecules. Clinically, oxygen toxicity is difficult to diagnose, but changes in the lungs are similar to those seen in acute respiratory distress syndrome. The oxygen concentration used to maintain critical patients should always be minimized to the lowest the patient can tolerate.

-Dr Waddell, DVM, DACVECC 

Preventing Carbon Dioxide Build-up in Your Pet's Oxygen Cage


One of the most important elements of your oxygen cage setup is the displacement of carbon dioxide. The best way to mitigate carbon dioxide in a pet oxygen cage at home is through ventilation and air exchange . Venting your cage is the first step: don’t worry, you won’t lose as much oxygen as you think! Venting the oxygen cage 6-8 inches by leaving the zipper open reducies the oxygen level by less than 1%.


Your pet is exhaling carbon dioxide with each breath, and without proper airflow and ventilation, carbon dioxide can build up and become unsafe for your pet.

By rigorously testing the Buster ICU Oxygen Cage, Pawprint Oxygen was able to confirm that opening the zippers 6-8 inches can reduce carbon dioxide significantly while reducing oxygen by only a very small amount. 


Proper air exchange is equally important to maintaining safe levels of carbon dioxide. A medium-sized oxygen cage is typically 100-120 liters in liquid volume — that’s a lot of space to fill up with oxygen! Using a flow rate of 5 liters per minute would take 24 minutes to cycle through all of the air in the cage, which isn’t enough air exchange to maintain safe carbon dioxide levels. So how do we fix that? Keep reading to find out!

With the Venturi System! 

This system, described above and included with the Buster ICU Oxygen Cage , multiplies the total airflow in the pet oxygen cage, helping to flush out carbon dioxide and keeping the cage cool. For example, using the 40% Venturi adapter with a 5 Liter Per Minute oxygen supply results in 12-13 Liters Per Minute of total airflow into the pet oxygen cage. That’s enough to maintain safe carbon dioxide levels.



Be careful of pet oxygen cages that don’t use the Venturi Adapter system! We tested a few products marketed on Amazon and found that carbon dioxide levels rose to dangerous levels within 5 minutes of use in certain pet oxygen cages.

venturi oxygen kit

Choosing the Right Oxygen Cage for Your Pet is Crucial for the Following Top Three Reasons:

  1. Effective Oxygen Delivery : The right oxygen cage ensures a controlled and consistent supply of oxygen, which is essential for managing respiratory conditions effectively. Proper oxygen levels help alleviate symptoms and improve your pet's overall health and recovery.

  2. Safety and Comfort : A well-designed oxygen cage provides a safe and comfortable environment, minimizing stress for your pet. It includes features like proper ventilation, temperature control, and secure access points, which are vital for the well-being and comfort of your pet during treatment.

  3. Ease of Monitoring and Maintenance : The right oxygen cage allows for easy monitoring of your pet's condition and ensures that oxygen levels are maintained accurately. It also simplifies cleaning and maintenance, reducing the risk of infections and ensuring the cage remains hygienic and functional for prolonged use.

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