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SESK: Stuff Everyone Should Know · sesk.info/small-guinea-pig-cheek-teeth-grow

What is true about guinea pig cheek teeth?

They grow continuously, just like the front teeth.

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  1. They never grow
  2. They grow only in males
  3. They grow continuously ✔

Why: Guinea pig cheek teeth need constant wear from hay and grass. Without it, they can overgrow and injure the mouth.

Huh, didn't know that: Guinea pigs have 20 teeth, and the back ones are hard to see without a vet exam.

The dad joke
Why did the guinea pig floss? He had cheek teeth to impress.
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References

Answer: They grow continuously. Guinea pig cheek teeth need constant wear from hay and grass. Without it, they can overgrow and injure the mouth.

  1. Merck Veterinary Manual: Description and Physical Characteristics of Guinea Pigs www.merckvetmanual.com/all-other-pets/guinea-pigs/description-and-physical-characteristics-of-guinea-pigs
    Guinea pigs' teeth are “open rooted,” meaning they grow all throughout life.
    Checked 2026-10-11.
  2. Merck Veterinary Manual: Common Health Problems of Guinea Pigs www.merckvetmanual.com/all-other-pets/guinea-pigs/common-health-problems-of-guinea-pigs
    Often the molars at the back of the mouth cause problems even when the front teeth look normal.
    Checked 2026-10-11.

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