How We Source Content

The Sourcing Rule

Every legal claim on this site links its primary source: the United States Code, the Code of Federal Regulations, state statutes, or official agency guidance. If we cannot cite it, we do not say it.

Secondary sources, including other ESA websites, are never the basis for a legal claim. Where the law is unsettled or varies by state, we say so instead of flattening the nuance. Claims about mental health conditions cite peer-reviewed research and are stated at the strength the evidence supports, not stronger.

Verification Cadence and Freshness

• Every page is re-checked at least quarterly, and its verification date updated only when the check actually happened.
• Law changes trigger immediate updates. State ESA statutes are tracked continuously; an amendment updates the affected page ahead of the quarterly cycle.
• Sources are re-verified on the same cadence. Dead or moved links are fixed.

Corrections

If you find an error, email support@helpfulpets.com with the page and the claim. Substantive errors are corrected within five business days, and pages that carried a material error get a visible correction note. Disagreements about interpretation are handled by citing the source and, where honest experts disagree, saying so on the page.