Hello, I'm a pet care specialist with extensive knowledge in animal behavior and health. When it comes to the lifespan of pet rats, there are several factors to consider, including their diet, living conditions, and overall health.
Pet rats, when provided with proper care, can live for about 2 to 3 years on average. However, some rats may live slightly longer, up to 4 years, though this is less common. It's important to note that the lifespan of a pet rat can vary based on its breed, as some breeds may have a longer or shorter average life expectancy.
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