Haw. Rev. Stat. § 347-2.5: Service animal, defined.

As used in this chapter, "service animal" means any dog that is individually trained to do work or perform tasks for the benefit of an individual with a disability, including a physical, sensory, psychiatric, intellectual, or other mental disability. Other species of animals, whether wild or domestic, trained or untrained, are not service animals for the purposes of this definition. The work or tasks performed by a service animal must relate directly to the individual's disability. Neither the potential crime deterrent effects of an animal's presence nor the provision of emotional support, comfort, or companionship by an animal constitutes work or tasks for the purposes of this definition.