public-service · four-inch turtle rule
Is the "No Turtles Under 4 Inches" Rule Real?
The cited CDC and FDA provisions both contain a four-inch carapace-length threshold, with different quoted import and sale/distribution language.
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Updated: Sources: 2

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What matters now
- A CDC regulation (42 CFR 71.52) prohibits importing live turtles with a carapace under 4 inches into the United States.
- An FDA regulation (21 CFR 1240.62) separately prohibits selling, holding for sale, or otherwise commercially or publicly distributing that same size class.
- The two regulations cross-reference each other: imported turtles become subject to the FDA's rule once they clear a U.S. port.
- The CDC's regulation states its own purpose: preventing the public from contracting Salmonella and Arizona bacteria infections.
- The cited CDC provision refers to 21 CFR 1240.62 after admission at a U.S. port.
The cited CDC provision at 42 CFR 71.52 and FDA provision at 21 CFR 1240.62 each contain a four-inch carapace-length threshold. The CDC text addresses importation, while the FDA text addresses sale, holding for sale, and commercial or public distribution. The CDC provision also refers to the FDA regulation after admission at a U.S. port.
This original record-reading guide is a general reading aid, not cited evidence. It does not depict a source record; the article text and source links provide the facts.
Key points
- A CDC regulation (42 CFR 71.52) prohibits importing live turtles with a carapace under 4 inches into the United States.
- An FDA regulation (21 CFR 1240.62) separately prohibits selling, holding for sale, or otherwise commercially or publicly distributing that same size class.
- The two regulations cross-reference each other: imported turtles become subject to the FDA’s rule once they clear a U.S. port.
- The CDC’s regulation states its own purpose: preventing the public from contracting Salmonella and Arizona bacteria infections.
- The CDC provision refers to 21 CFR 1240.62 after admission at a U.S. port.
Import Rule
The CDC’s regulation is unambiguous about entry into the country: “live turtles with a carapace length of less than 4 inches and viable turtle eggs may not be imported into the United States” (eCFR, Title 42, Part 71).
The cited provision contains additional text concerning lots of fewer than seven live turtles or viable turtle eggs and the phrase “not in connection with a business” (eCFR, Title 42, Part 71). This article does not interpret that text or determine whether an exception applies to a particular import.
Sale Rule
Separately, the FDA regulates what can be sold or distributed inside the United States, regardless of where the turtle came from. Under that rule, “viable turtle eggs and live turtles with a carapace length of less than 4 inches shall not be sold, held for sale, or offered for any other type of commercial or public distribution” (eCFR, Title 21, Section 1240.62).
The supplied FDA provision includes additional exception language. This article does not interpret that language or determine whether it applies to a particular sale or distribution.
How the two rules connect
The CDC’s import regulation states: “Upon admission at a U.S. Port, turtles and viable turtle eggs become subject to Food and Drug Administration Regulations (21 CFR 1240.62) regarding general prohibition” (eCFR, Title 42, Part 71). This article reports that cross-reference without determining how either provision applies to a particular turtle or transaction.
Why the four-inch threshold exists
The CDC’s regulation states the reason its precautions exist: “to prevent infection of members of the public with Salmonella and Arizona bacteria” (eCFR, Title 42, Part 71). Both regulations apply that same four-inch carapace-length threshold described above.
What this article does not cover
This article reports only the quoted federal provisions and their cross-reference. It does not determine whether an exception applies to a particular import, sale, distribution, species, or location.