How Big Do Rats Get? in Texas, UK, Australia, NYC… LEARN MORE

How Big Do Rats Get

How Big Do Rats Get?

The average life span of rats is 2–3 years; mice 1–2 years. The average body length of adult rats is 9–11 inches; mice 3–4 inches; with an average tail length of 7–9 inches in rats and 3–4 inches in mice. The average body weight for rats is 350–450 grams for a female, 450–650 grams for a male; mice 30 grams each sex. There have been a few adult male rats that weighed 2 pounds!

ALSO SEE: Can You Adopt A Pet Rat?

How Big Do Rats Get

I want to weigh my rats now. I’m pretty sure my boys are in the lower 600′s range. Last Saturday, I took him to an adoption fair with me and I got comments that Splinter is “HUGE”. I will be truthful and say he might be a little over weight.

He has tummy rolls when he’s sitting down and grooming himself. I’ve been trying to cut back on the amount of junk food I give him and give him some more time to run around and get some exercise. 🙂

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