Assistant Laboratory Animal Technician (ALAT) Practice Exam

What is the average lifespan of a mouse in months?

1. 6-12 months

2. 12-24 months

3. 12-36 months

4. 24-36 months

The correct answer is: 12-36 months

The average lifespan of a mouse is generally around 12 to 36 months, depending on factors such as breed, care, and environment. In controlled laboratory settings, mice are often kept for specific study purposes, and their lifespan can be somewhat extended compared to pet mice that may face different health and environmental challenges. While smaller breeds or those subject to certain conditions may fall on the lower end of the lifespan spectrum, the typical lifespan for laboratory mice tends to align with the 12 to 36 months range. It's also important to consider that advancements in breeding practices, nutrition, and overall animal welfare can contribute to the longevity of laboratory mice, facilitating their stay in research settings longer than the more commonly known 6 to 12-month lifespan.