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Idaho Falls, ID Animal Ordinances: Mandatory Spay/Neuter (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Shelter adoptions
spay/neuter within 30 days
Repeat impounds
2x unaltered in 1 year triggers mandate
Applies to
dogs (§5-6-6) and cats (§5-6-11)
Enforced by
Animal Control Shelter

Summary

Idaho Falls requires dogs and cats adopted from the Animal Control Shelter to be spayed or neutered within 30 days, and imposes the same mandate on any unaltered dog or cat impounded twice within one year.

Any dog adopted from the Animal Control Shelter shall be spayed or neutered by a licensed veterinarian either prior to adoption, or within thirty

(30) days of adoption, or as soon after the dog is old enough to be spayed or neutered. If the dog is not already spayed or neutered, the adopter shall agree to provide evidence of spaying or neutering to the Animal Control Shelter within thirty (30) days. For dogs determined by a licensed veterinarian to be too young to be spayed or neutered within thirty (30) days of adoption, proof of spaying or neutering shall be provided by the dog's owner within thirty (30) days of the age the dog became eligible for spaying or neutering, which date shall be designated on the adoption paperwork.

(D) An unneutered dog that has been impounded at the Animal Control Shelter on two (2) previous occasions during the previous one (1) year period shall be required to be spayed or neutered prior to the owner redeeming the animal. The impound, and boarding fees, shall be applied toward the cost of the spay or neuter.

(E) Unclaimed Dogs. The ownership of any dog not redeemed within the periods of time herein stated shall be forfeited and the dog may be sold thereafter by the Animal Services Manager to any person.

(F) No dog shall be released from the Animal Control Shelter unless the dog is licensed

Full Breakdown

Idaho Falls City Code § 5-6-6(C) requires that any dog adopted from the Animal Control Shelter be spayed or neutered by a licensed veterinarian before adoption or within 30 days after, with proof due to the shelter within that window. Section 5-6-6(D) goes further: an unneutered dog impounded twice at the shelter within one year must be spayed or neutered before the owner may redeem it, with impound and boarding fees applied toward the surgery's cost. Sections 5-6-11(G)-(H) impose the identical 30-day and two-impound spay/neuter mandates on adopted and repeatedly impounded cats.

Violations & Fines

Failing to provide proof of spay or neuter within the required window can block redemption of an impounded, previously unaltered dog or cat until the surgery is completed; the animal's impound and boarding fees are applied toward the procedure's cost.

Frequently Asked Questions

Does Idaho Falls require all pet owners to spay or neuter their animals?
No: the mandate applies only to dogs/cats adopted from the City shelter and to unaltered animals impounded twice in one year, per §§ 5-6-6(C)-(D) and 5-6-11(G)-(H).
What happens if I don't get my adopted dog fixed in time?
You must still provide proof of spay/neuter to the Animal Control Shelter; the animal's release can be conditioned on compliance.

Sources & Official References

Other rules in Idaho Falls

All Idaho Falls rules

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