SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/cat-food-switch

When switching a cat to a new food, what does International Cat Care suggest to start?

Start with 75 percent old, 25 percent new.

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  1. 75 percent old food and 25 percent new ✔
  2. 100 percent new food at once
  3. 50 percent each on day one

Why: International Cat Care says to switch gradually to avoid vomiting or diarrhea. Start with 75 percent old food and 25 percent new, then slowly shift the balance.

Huh, didn't know that: Some cats accept a new diet over 5 to 7 days, others can take 2 to 8 weeks.

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What do you call a cat that gets anything it wants? Purr-suasive.
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References

Answer: 75 percent old food and 25 percent new. International Cat Care says to switch gradually to avoid vomiting or diarrhea. Start with 75 percent old food and 25 percent new, then slowly shift the balance.

  1. International Cat Care, How to change your cat's food to a new diet icatcare.org/articles/how-to-change-your-cats-food-to-a-new-diet
    Begin by offering 75% of their old diet, with 25% of their new diet
    Checked 2026-10-10.

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