When Do Gerbils Become Infertile? Understanding Gerbil Reproduction and Lifespan

Gerbils are small, social animals that make great pets for many reasons. They are active, curious, and friendly, and they have a relatively long lifespan for such small creatures. However, if you’re interested in breeding gerbils or keeping them as pets, it’s important to understand their reproductive system and lifespan.

Knowing more about gerbil reproduction can help you make better decisions about breeding and care, and understanding their lifespan can help you prepare for the future. In this blog post, we’ll take a closer look at gerbil reproduction and lifespan, focusing on the question: When do gerbils become infertile?

Gerbil Reproduction

Before we can answer the question of when gerbils become infertile, we need to take a closer look at gerbil reproduction. Gerbils are rodents, and they have a reproductive system that is similar to other rodents, such as mice and rats.

Female gerbils have a reproductive system that consists of two ovaries and a uterus. They go into heat every 4-6 days, and their estrus cycle lasts for about 24 hours. During this time, they release an egg that can be fertilized by a male gerbil.

Male gerbils have a reproductive system that consists of two testes and a penis. They are capable of breeding throughout their lifespan, and they become sexually mature at around 3-4 months of age.

Gerbil Reproduction Process

When a female gerbil is in heat, she will attract a male gerbil with her scent. The male will then mount her and fertilize the egg if present.

Once fertilized, the egg will implant itself in the uterus and begin to develop into a fetus. The gestation period for gerbils is around 24-26 days, and the female will give birth to a litter of pups.

Gerbil pups are born blind, hairless, and helpless. They rely on their mother for food and warmth, and she will nurse them for around 3-4 weeks. After this time, the pups will start to eat solid food and become more independent.

Gerbil Reproduction and Lifespan

There are many factors that can affect gerbil reproduction and lifespan. These include genetics, diet, environment, and overall health. Gerbils that are well-cared for and kept in a healthy environment are more likely to live long, productive lives.

However, even under the best of circumstances, gerbils will eventually become infertile. Most gerbils become infertile around 1-2 years of age, although some may remain fertile for up to 3 years.

The signs of gerbil infertility include a lack of interest in mating, difficulty conceiving, and a decrease in litter size. If you suspect that your gerbil may be infertile, it’s important to consult with a veterinarian who specializes in exotic animals.


Understanding gerbil reproduction and lifespan is essential for anyone who wants to breed these animals or keep them as pets. By knowing more about how gerbils mate and reproduce, you can make better decisions about their care and breeding.

In addition, understanding when gerbils become infertile can help you plan for the future and ensure that you are providing the best possible care for your pets. With careful attention to their reproductive health and lifespan, gerbils can live long, happy lives and be a joy to their owners.

ThePetFaq Team