What is a service animal under Illinois law?

Illinois defines a service animal as an animal trained in obedience and task skills to meet the needs of a person with a disability.

Does this apply to a dog in training?

It depends on the facts. Documentation of training, tasks performed, and the disability connection often matters.

What if both spouses claim the animal is theirs?

Disputes over service-animal status are fact-specific. Records, prescriptions, training certifications, and ADA documentation can all be relevant.

Service Animals

Service Animals and Divorce: Who Keeps the Animal?

Service animals are not treated the same as companion animals. The Illinois divorce companion-animal provisions exclude service animals.

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Why the Distinction Matters

A true service animal is an essential medical and accessibility tool for one person. Courts and statutes generally recognize that this is different from a household pet. The Illinois statute reflects this by excluding service animals from the companion- animal allocation framework.

What to Document

Training program records and certifications, if any.
Healthcare provider statements about disability and need.
Tasks the animal performs.
Ownership, registration, and acquisition records.

FAQ

Need help with a dog, cat, or companion animal dispute?

Call 312-270-1405 now or start a pet custody intake. The sooner you collect evidence and document possession, the better positioned you may be.

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Reviewed by Tanner-Flomberg Law LLC

Last reviewed June 2026 · Nationwide pet custody guidance