Section 597u.
Cal. Penal Code - PEN § 597u.
in effect(a)
A person, peace officer, officer of a humane society, or officer of an animal shelter or animal regulation department of a public agency shall not kill an animal by using either of the following methods:
(1)
Carbon monoxide gas.
(2)
Intracardiac injection of a euthanasia agent on a conscious animal, unless the animal is heavily sedated or anesthetized in a humane manner, or comatose, or unless, in light of all the relevant circumstances, the procedure is justifiable.
(b)
With respect to the killing of a dog or cat, a person, peace officer, officer of a humane society, or officer of
an animal shelter or animal regulation department of a public agency shall not use any of the methods specified in subdivision (a) or any of the following methods:
(1)
High-altitude decompression chamber.
(2)
Nitrogen gas.
(3)
Carbon dioxide gas.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026