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SESK: Stuff Everyone Should Know · sesk.info/reptile-no-cat-food

Which food do many nutritionists say not to feed pet reptiles?

Cat food is a poor choice for reptiles.

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  1. Dark leafy greens
  2. Cat food ✔
  3. Gut-loaded crickets

Why: Merck says high-protein cat food can give reptiles too much protein and vitamin D3. Too much protein can cause gout, a painful buildup of uric acid.

Huh, didn't know that: Merck's recommended minimum protein is about 30% to 50% for meat-eating reptiles and 18% to 22% for plant-eaters.

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Why did the turtle turn down the cat food? It was not feline it.
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References

Answer: Cat food. Merck says high-protein cat food can give reptiles too much protein and vitamin D3. Too much protein can cause gout, a painful buildup of uric acid.

  1. Merck Veterinary Manual (pet owner): Providing a Home for a Reptile www.merckvetmanual.com/all-other-pets/reptiles/providing-a-home-for-a-reptile
    Many nutritionists recommend not feeding cat foods to reptiles.
    Checked 2026-10-11.
  2. Merck Veterinary Manual (pet owner): Providing a Home for a Reptile www.merckvetmanual.com/all-other-pets/reptiles/providing-a-home-for-a-reptile
    Feeding excess protein can result in a condition called hyperuricemia
    Checked 2026-10-11.

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