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SESK: Stuff Everyone Should Know · sesk.info/reptile-leopard-gecko-prey-size

How large should feeder insects be for a leopard gecko?

Choose prey about half the size of its head.

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  1. Larger than its whole head
  2. Any size available
  3. About half its head size ✔

Why: UC Davis gives about half the gecko's head size as a prey guide. Choosing appropriately sized insects makes them easier and safer to capture and swallow.

Huh, didn't know that: The same guide says insects for insect-eating lizards should be offered daily or every other day.

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Why did the gecko size up the cricket? It was thinking before biting.
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References

Answer: About half its head size. UC Davis gives about half the gecko's head size as a prey guide. Choosing appropriately sized insects makes them easier and safer to capture and swallow.

  1. Avian, Small Mammal, and Exotics Feeding Guide cvet.vetmed.ucdavis.edu/sites/g/files/dgvnsk13661/files/inline-files/CVET%20Avian%20and%20Exotics%20Animal%20Care%20and%20Feeding%20Guide%20010725.pdf
    For geckos, prey items should be approximately half the size of the gecko's head.
    Checked 2026-10-11.
  2. CVET Avian and Exotics Animal Care and Feeding Guide (UC Davis) cvet.vetmed.ucdavis.edu/sites/g/files/dgvnsk13661/files/inline-files/CVET%20Avian%20and%20Exotics%20Animal%20Care%20and%20Feeding%20Guide%20010725.pdf
    Insects should be offered daily or every other day.
    Checked 2026-10-11.

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