How to Safely Introduce a New Gerbil to Two Others: Tips and Tricks for Gerbil Owners

Introducing gerbils improperly can lead to stress, injuries, and even death. Gerbils are territorial animals, and introducing a new gerbil to their established territory can result in aggressive behavior. It is essential to introduce gerbils safely to ensure their physical and mental well-being.

Understanding Gerbil Behavior

Before introducing gerbils, it is crucial to understand their behavior. Gerbils communicate with each other through body language, and it is essential to be able to read their signals to know how they feel.

Gerbil Body Language

Gerbils have a variety of body postures that convey different messages. A relaxed gerbil will have a straight posture with its tail down and ears relaxed. If a gerbil is feeling threatened, it will puff up its fur, arch its back, and raise its tail. If a gerbil is aggressive, it may make a “thumping” noise with its hind legs, lunge at other gerbils, or chase them.

Group Dynamics

Gerbils are social animals that live in groups in the wild. In captivity, it is best to keep gerbils in pairs or small groups of the same sex. Gerbils establish a hierarchy within their group, and it is essential to introduce new gerbils gradually to prevent fighting.

Preparing for Introductions

Before introducing gerbils, it is crucial to prepare adequately.

Adequate Housing

Make sure that you have enough space for all of your gerbils. The minimum recommended cage size for three gerbils is 20 gallons. Provide plenty of hiding places, toys, and food and water sources to prevent competition.

Quarantine Period

Quarantine the new gerbil in a separate cage for at least two weeks before introducing it to your other gerbils. This will allow you to observe the new gerbil for any signs of illness and prevent the spread of disease to your other gerbils.

Introducing the Gerbils

Once you have prepared adequately, you can start the introductions.

Neutral Territory

Introduce the gerbils on neutral territory, such as a bathtub or a playpen. This will prevent established gerbils from feeling threatened and territorial.

Supervised Playtime

Supervise the gerbils during playtime to prevent any aggressive behavior. It is normal for gerbils to establish their hierarchy, but if fighting becomes too aggressive, separate them immediately.

Introducing Scents

Introduce the new gerbil’s scent to your established gerbils gradually. You can do this by rubbing the new gerbil with a cloth and placing it in the established gerbil’s cage. This will allow them to become familiar with each other’s scent without any physical contact.

Signs of Success

It may take some time for gerbils to get used to each other, but there are signs of success to look out for.

Positive Interactions

If gerbils are grooming each other or sleeping together, it is a sign that they have accepted each other.

Shared Nesting Area

If gerbils are sharing a nesting area, it is a sign that they are comfortable with each other.

Addressing Issues

Sometimes, despite your best efforts, gerbils may not get along. Here’s what to do.

Aggressive Behavior

If one gerbil is being overly aggressive towards the others, separate it immediately. You may need to reintroduce it gradually or keep it separate from the others permanently.

Separating Gerbils

If gerbils continue to fight despite your best efforts, it may be best to keep them separate permanently.


Introducing a new gerbil to two others can be a rewarding experience for both you and your gerbils. However, it is essential to do it safely and gradually to prevent any injuries or stress. By understanding gerbil behavior, preparing adequately, and introducing gerbils on neutral territory, you can successfully expand your gerbil family. Remember to always supervise playtime and look out for signs of aggression. With patience and careful observation, your gerbils can live together happily.

ThePetFaq Team