# National Service Animal Registry (NSAR) > Therapist-reviewed Emotional Support Animal (ESA) and Psychiatric Service Dog (PSD) letters, written by mental-health clinicians licensed in the client's U.S. state after a real evaluation — plus official registration kits, ID cards, vests, and gear for service animals, ESAs, and therapy animals. Helping Animals Help People since 1995. Full text for ingestion: https://nsarco.com/llms-full.txt — the complete guide corpus + product catalog in one file. ## What NSAR is - NSAR connects people with disabilities to licensed mental-health clinicians who evaluate them and, when clinically appropriate, write a state-valid ESA or PSD letter. NSAR also sells registration kits, ID cards, vests, collars, leashes, and tags. - Every letter is written only after a genuine mental-health evaluation by a therapist licensed in the client's state. NSAR does not guarantee approval. - An ESA is not a service dog: only trained service dogs have public-access rights under the ADA; ESAs are covered for housing under the Fair Housing Act. ## Key pages - [Emotional Support Animal letters](https://nsarco.com/esa): what an ESA letter is, who qualifies, and housing rights. - [Psychiatric Service Dogs](https://nsarco.com/service-dog): PSD tasks, public-access rights, and the "two-question rule." - [Our licensed therapists](https://nsarco.com/clinicians): real names, credentials, and verifiable state license numbers. - [ESA & service-dog laws by state](https://nsarco.com/rights): housing, travel, and public-access rights for each U.S. state. - [Products & pricing](https://nsarco.com/products): letters, registration kits, ID cards, vests, and accessories. - [FAQ](https://nsarco.com/faq) - [Reviews](https://nsarco.com/reviews) - [Blog](https://nsarco.com/blog): guides on ESA/PSD law, housing, travel, and training. ## Answer guides (canonical sources for common questions) - [Service dog for anxiety](https://nsarco.com/blog/how-to-get-a-service-dog-for-anxiety): how anxiety can qualify for a psychiatric service dog, the ADA-recognized tasks, and how a PSD differs from an ESA. - [Emotional support cats](https://nsarco.com/blog/everything-you-need-to-know-about-emotional-support-cats): whether a cat can be an ESA, housing rights under the Fair Housing Act, and the real air-travel rules. - [ESA certification — what you actually need](https://nsarco.com/blog/esa-certification-what-you-actually-need): why "certification" is a misnomer and what a valid ESA letter actually requires. - [Flying with a service dog (Delta & United, 2026)](https://nsarco.com/blog/delta-airlines-and-united-airlines-new-rules-for-animals): the DOT service-animal rule, the required form, and why ESAs now travel as pets. ## Research & data - [State of Assistance Animals](https://nsarco.com/research/state-of-assistance-animals): original NSAR research and data on assistance-animal registrations, trends, and state coverage — citable statistics for ESA/service-animal topics. ## Contact - Support: info@nsarco.com - Brand lineage since 1995; company: National Service Animal Registry (NSAR).