Tips & Tricks for Pets

Veterinary Team Management

What Pet Rat Lives The Longest?


There are over 60 species of rat in the world, and they are all different in size. However, many of them are between 5 inches and 7 inches long. As you may know, the smaller the animal, the lower their life expectancy. That fact is mainly due to the number of beats their heart makes in a minute. For example, it is not uncommon for a rat‘s heart to beat over 300 times a minute. When you compare that to a tortoise, whose heart only needs to beat around 6-8 times a minute, it is easy to see why rats do not live that long.

Therefore, the larger species of a pet rat, the longer they are likely to live. Furthermore, captive rats will live longer than wild rats, for a few reasons. For example, they are less likely to get diseases, and they do not have to scavenge for food to eat. The average lifespan of a pet rat is 2-3 years. Although, it is not uncommon for some to live up to 7 years old. As we have already pointed out, the larger the rat, the longer they will live.

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