---
type: "Bill"
title: "Animals: euthanasia."
description: "Existing law prohibits a person from killing an animal by using carbon monoxide gas or intracardiac injection of a euthanasia agent on a conscious animal, except as specified. With respect to the killing of a dog or cat, existing law prohibits a person from using a high-altitude decompression chamber or nitrogen gas. Under existing law, a violation of these provisions is a misdemeanor."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20152016"
identifier: "AB 2505"
citation: "California AB 2505 (20152016)"
classification: ["bill"]
subjects: ["Animals: euthanasia."]
status: "enacted"
primary_sponsors: ["Quirk"]
version_count: 4
action_count: 19
vote_count: 5
first_action: "2016-02-19"
last_action: "2016-07-25"
source: "openstates"
source_identifier: "ocd-bill/a741028d-2c15-4216-9ca1-3d37f5203276"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160AB2505"
source_hash: "8eeeb41b6d12ce07ddf78a66d03628df9f08c3e37a6280e9a91420a15ac2d82b"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ca"]
---

# California AB 2505 (20152016) — Animals: euthanasia.

Existing law prohibits a person from killing an animal by using carbon monoxide gas or intracardiac injection of a euthanasia agent on a conscious animal, except as specified. With respect to the killing of a dog or cat, existing law prohibits a person from using a high-altitude decompression chamber or nitrogen gas. Under existing law, a violation of these provisions is a misdemeanor.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **02/19/16 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB2505&version=20150AB250599INT)
2. **07/25/16 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB2505&version=20150AB250597CHP)
3. **AB2505** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160AB2505)
4. **07/07/16 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB2505&version=20150AB250598ENR)

## Votes

- Consent Calendar 2nd — **37–0** (pass) · upper
- AB 2505 QUIRK Consent Calendar Second Day — **79–0** (pass) · lower
- Do pass. To Consent Calendar. — **20–0** (pass) · lower
- Do pass, but first be re-referred to the Committee on [Appropriations] with the recommendation: To Consent Calendar — **7–0** (pass) · upper
- Do pass and be re-referred to the Committee on [Appropriations] with recommendation: To Consent Calendar — **7–0** (pass) · lower

## Sponsors

- Quirk — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2016-02-19** Introduced. To print. `introduction`
- **2016-02-21** From printer. May be heard in committee March 22.
- **2016-02-22** Read first time. `reading-1`
- **2016-03-08** Referred to Com. on PUB. S. `referral-committee`
- **2016-03-30** From committee: Do pass and re-refer to Com. on APPR. with recommendation: To Consent Calendar. (Ayes 7. Noes 0.) (March 29). Re-referred to Com. on APPR. `referral-committee, committee-passage-favorable, committee-passage`
- **2016-04-13** From committee: Do pass. To Consent Calendar. (Ayes 20. Noes 0.) (April 13). `committee-passage-favorable, committee-passage`
- **2016-04-14** Read second time. Ordered to Consent Calendar. `reading-2, reading-1`
- **2016-04-21** Read third time. Passed. Ordered to the Senate. (Ayes 79. Noes 0. Page 4464.) `reading-3, passage, reading-1`
- **2016-04-21** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2016-05-05** Referred to Com. on PUB. S. `referral-committee`
- **2016-05-19** In committee: Hearing postponed by committee.
- **2016-06-14** From committee: Do pass and re-refer to Com. on APPR. with recommendation: To Consent Calendar. (Ayes 7. Noes 0.) (June 14). Re-referred to Com. on APPR. `referral-committee, committee-passage-favorable, committee-passage`
- **2016-06-27** From committee: Be placed on second reading file pursuant to Senate Rule 28.8 and ordered to consent calendar. `committee-passage`
- **2016-06-28** Read second time. Ordered to Consent Calendar. `reading-2, reading-1`
- **2016-06-30** Read third time. Passed. Ordered to the Assembly. (Ayes 37. Noes 0. Page 4651.). `reading-3, passage, reading-1`
- **2016-06-30** In Assembly. Ordered to Engrossing and Enrolling. `committee-passage`
- **2016-07-11** Enrolled and presented to the Governor at 4:30 p.m.
- **2016-07-25** Approved by the Governor. `executive-signature`
- **2016-07-25** Chaptered by Secretary of State - Chapter 105, Statutes of 2016.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/a741028d-2c15-4216-9ca1-3d37f5203276`. Confidence: reported (aggregated from official California legislature records).