Animal-Assisted Therapy for Kids: What Clinical Research Shows

Walk into many pediatric therapy offices today and you may find a golden retriever sitting beside the therapist’s chair. Drive past an equine facility and you might see a sign for “horse therapy for autism.” Visit certain residential treatment programs and you’ll see children caring for goats, rabbits, and chickens as part of their healing. Animal-assisted therapy has expanded dramatically in the past two decades, and it’s arrived with marketing that sometimes outpaces the clinical evidence.

The research picture for animal-assisted therapy with children is genuinely encouraging in several specific areas — and genuinely overstated in others. The first step to understanding it is getting the terminology straight, because researchers and programs often mean different things when they use the same words. Getting this right is not pedantry: it determines which research is relevant to which claim, and which credentials a program provider should actually hold.

Key Takeaways

• Animal-assisted therapy (AAT), animal-assisted activities (AAA), and animal-assisted education (AAE) are distinct categories with different evidence bases and different professional requirements.
• The 2007 Nimer and Lundahl meta-analysis — the most comprehensive review of the period — found overall positive effects across multiple outcomes but noted significant methodological limitations in the underlying studies.
• The strongest pediatric evidence is for anxiety reduction during medical procedures, social engagement in autistic children, and pain tolerance during hospitalization.
• Equine-assisted therapy for autism has a growing evidence base but also the most aggressive marketing, and program quality varies enormously.
• Finding a legitimate AAT program requires verifying therapist licensure and animal handler certification — the animal’s presence alone does not make an activity therapeutic.
• Outcomes that are reliably improved are behavioral and emotional; cognitive or academic outcomes have much weaker support.

AAT vs. AAI vs. AAE: Why the Distinctions Matter

The terminology used in animal-assisted interventions is inconsistently applied in both research and marketing, which is one reason findings are hard to interpret. The International Association of Human-Animal Interaction Organizations (IAHAIO) has established definitions that serious researchers now use:

Animal-Assisted Therapy (AAT) is a goal-directed intervention delivered by a licensed health professional — a psychologist, occupational therapist, speech-language pathologist, or social worker — as part of their professional scope of practice. The animal is an integral part of the treatment plan. Progress is documented and evaluated. The therapist is primarily responsible; the animal is a tool within an evidence-based framework.

Animal-Assisted Activities (AAA) are structured, informal interactions between animals and people — visiting therapy dogs at a hospital, a pet-assisted reading program at a library — typically facilitated by trained volunteers, not licensed clinicians. There is no individualized treatment plan and no systematic outcome measurement.

Animal-Assisted Education (AAE) involves animals in structured educational settings to support learning goals, often facilitated by a teacher or educator with animal handling training.

The distinction matters because most of the rigorous research examines AAT — structured, clinical intervention with credentialed therapists. A large portion of the programs marketed as “therapy” are providing AAA at best. A dog in a therapist’s office during a session the therapist would have conducted anyway is not the same as an animal-assisted therapy protocol where the animal’s behavior is integrated into treatment goals and progress is measured. Both can be valuable; they are not the same thing and should not be evaluated by the same evidence.

What the Systematic Reviews Found

Nimer and Lundahl’s 2007 meta-analysis in Anthrozoös examined 49 studies of animal-assisted therapy and found overall beneficial effects across four outcome areas: autism spectrum symptoms (Cohen’s d = 0.59), medical difficulties (d = 0.49), behavioral problems (d = 0.40), and emotional well-being (d = 0.37). These are small-to-medium effect sizes — meaningful, but not dramatic.

The authors noted significant methodological limitations across the literature: small sample sizes, lack of randomized control conditions, variable outcome measures, and limited follow-up data. The effect sizes should be interpreted with this context in mind. They suggest real benefits for some populations in some settings, not a uniformly strong evidence base.

Becker and colleagues (2017) reviewed specifically pediatric AAT studies and found the most consistent evidence for anxiety reduction during medical procedures. Children who interacted with therapy dogs before and during blood draws, IV insertions, chemotherapy infusions, and dental procedures showed measurably lower self-reported anxiety and behavioral distress markers compared with control conditions. Several of these were randomized controlled trials with adequate samples — this is among the stronger evidence in the field.

A 2019 systematic review by Brelsford and colleagues in Frontiers in Veterinary Science examined 55 studies of AAT with children and found positive effects on social functioning, emotional regulation, anxiety, and pain — with the caution that study quality was generally low and effects sizes varied widely. They identified study design quality as the primary predictor of effect size, with weaker studies showing larger apparent effects.

Outcomes That Research Supports

Anxiety reduction during medical procedures is the best-supported outcome in pediatric AAT. Multiple randomized trials have found that a calm, well-trained therapy dog present during needle procedures, dental work, and minor surgeries significantly reduces children’s distress markers — heart rate, self-reported fear, behavioral resistance — compared with standard care or distraction-only controls. The mechanism is plausible: interaction with a calm animal activates the parasympathetic nervous system via oxytocin release and reduces cortisol. This has been measured directly in several studies.

Social engagement in autistic children has meaningful support, particularly for behaviors like eye contact, verbal communication attempts, and proximity to peers in sessions that include animals compared with identical sessions without animals. Grandgeorge and Mazerolles’ 2012 review in PLOS ONE found that the presence of an animal functioned as a social bridge for autistic children who had difficulty initiating or sustaining interaction with adults and peers. The animal provided a shared focus that reduced the social demands of direct interaction.

Pain tolerance and mood during hospitalization has support from several trials in pediatric oncology and surgery contexts. Children with therapy animal visits reported higher pain tolerance, lower anxiety, and better mood during the period following animal-assisted activity compared with control conditions — effects that lasted several hours.

Post-traumatic stress and trauma processing has a growing evidence base in both children and adults, with some of the most notable work coming from equine-assisted psychotherapy programs for abuse survivors and children in foster care. The research here is less methodologically rigorous — fewer randomized trials, more case studies and open-label designs — but clinical accounts are consistent enough to warrant continued investigation.

Outcome	Evidence Strength	Best-Supported Setting	Notes
Anxiety during medical procedures	Strong — multiple RCTs	Hospitals, dental offices	Most rigorous evidence in the field
Social engagement (autism)	Moderate	Therapy sessions, school settings	Effect present but generalization unclear
Pain tolerance during hospitalization	Moderate	Pediatric oncology, surgery recovery	Self-report + behavioral measures
Trauma processing / PTSD symptoms	Limited — mostly case studies	Residential treatment, equine programs	Promising but needs RCTs
Academic performance	Weak	School reading programs	Effect on reading confidence not reading ability
General behavioral problems	Small-moderate	Outpatient therapy	Nimer & Lundahl 2007 meta-analysis

Equine-Assisted Therapy for Autism

Equine-assisted therapy — often marketed as hippotherapy (which specifically refers to physical therapy using horseback movement) or equine-assisted psychotherapy (EAP) — has become one of the most popular and most expensive interventions in the autism space. Sessions can cost $100–$300 per hour and are rarely covered by insurance.

Bass and colleagues (2009) conducted a randomized crossover trial of equine-assisted activities with 34 autistic children ages 4–16. Children showed significant improvements in social motivation, sensory sensitivity, and attentiveness during the EAA period compared with the control period. The physical experience of the horse’s movement and the sensory environment of working with a large animal may offer input that children with sensory processing differences find organizing.

A 2015 Cochrane-style review by Selby and Smith-Osbourne found insufficient evidence to draw firm conclusions about equine therapy for autism specifically, noting that while individual studies showed positive effects, none were adequately powered or had sufficient follow-up to support broad claims.

The gap between the marketing of equine therapy for autism and the research base is significant. Parents spending thousands of dollars on these programs deserve honest information: there is promising, suggestive evidence of benefit for some autistic children, particularly for sensory regulation and social behaviors in session. There is not yet strong randomized trial evidence sufficient to recommend it as a primary autism intervention. It may be a valuable supplement, particularly for children who respond well to outdoor and animal environments — not a replacement for evidence-based core interventions.

Children with autism who struggle socially may also benefit from structured social skills training — an intervention with a considerably larger research base, though one with its own complications and nuances worth understanding.

How to Find a Legitimate AAT Program vs. a Marketing Gimmick

The lack of consistent regulation in the animal-assisted intervention field makes consumer navigation genuinely difficult. These questions help separate credentialed programs from those using “therapy” as a marketing term:

Is the human facilitator a licensed professional? In true AAT, the therapist holds an active clinical license (LCSW, LPC, OTR, SLPA, etc.) and the animal work is integrated into their clinical practice. Ask for licensure information and verify it with your state licensing board.

Is the animal certified? Legitimate therapy animals are evaluated and certified through organizations such as Pet Partners, Alliance of Therapy Dogs, or Therapy Dogs International. Certification involves behavioral assessment and handler training. Ask for the animal’s certification documentation.

Is there a treatment plan and outcome measurement? If a program cannot explain what specific outcomes they’re targeting for your child, how they’ll measure progress, and how the animal’s involvement relates to those goals, you’re likely paying for AAA (activities) not AAT (therapy).

What are the credentials for equine programs specifically? Look for therapists credentialed through the Professional Association of Therapeutic Horsemanship International (PATH Intl.) or the Equine Assisted Growth and Learning Association (EAGALA). These organizations require both mental health credentials and equine experience.

For children managing anxiety or social-emotional difficulties, AAT can be a meaningful complement to evidence-based treatment — particularly for children who struggle to engage with traditional talk therapy. The animal often lowers the threshold for engagement. What the research does not support is using it as a primary or standalone treatment for diagnosed conditions.

What to Watch for Over the Next 3 Months

If your child is beginning an animal-assisted therapy program, establish clear outcome targets before starting — specific behaviors or symptoms you’re hoping to see change — and review them with the therapist after 6–8 sessions. Animal-assisted therapy is not meant to continue indefinitely without progress review.

Watch for whether gains in session generalize to other settings. Social engagement with an animal in a structured therapy environment is meaningful, but the therapeutic goal is for those skills to transfer to peer interactions and family situations. If progress is only visible in session and not in daily life after several months, discuss whether the intervention is achieving its goals.

The field of animal-assisted intervention research is expanding. The next three to five years will likely produce better-designed trials — particularly for autism and trauma — that will clarify which specific populations, which animals, and which protocols produce the most consistent benefits. The American Humane Society and several academic centers have active research programs in this area. Watching for systematic review updates is worthwhile for parents making long-term program decisions.

Frequently Asked Questions

Is animal-assisted therapy covered by insurance?

Rarely, and inconsistently. When AAT is delivered by a licensed professional as part of their documented clinical practice, it may be billable under standard therapy codes in some states. Equine programs are almost never covered. Verify with your insurer before committing to a program.

What’s the difference between a therapy dog and a service dog?

A service dog is individually trained to perform specific tasks for a person with a disability and has legal public access rights under the ADA. A therapy dog is trained for calm, controlled interaction with multiple people in clinical or community settings and does not have the same public access rights. Both have formal training requirements, but they serve different purposes.

Is animal-assisted therapy appropriate for very young children?

It can be, with appropriate supervision and animal temperament considerations. Some of the strongest evidence involves school-age children (5–12), but programs exist for preschool-age children as well. The key is that the animal must be exceptionally calm and well-trained, and sessions should be brief. Consult your child’s pediatrician or developmental specialist before starting.

My child is afraid of dogs. Can they still benefit from AAT?

Not from dog-specific programs — and exposure to feared animals without a structured fear-reduction protocol could be counterproductive. However, AAT is not exclusively dog-based. Programs exist using horses, guinea pigs, rabbits, birds, and farm animals. A child with significant animal fear deserves a careful conversation with any AAT provider about whether and how to proceed.

How do I know if a program is actually therapeutic or just fun?

Fun is not a disqualifying feature — engagement and enjoyment are meaningful, especially for children who resist traditional therapy. The distinction is whether there is a licensed therapist directing treatment, a documented treatment plan, and systematic outcome measurement. If those elements are absent, the program may provide value as an activity or enrichment experience, but it should not be described as therapy.

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About the author

Ricky Flores is the founder of HiWave Makers and an electrical engineer with 15+ years of experience building consumer technology at Apple, Samsung, and Texas Instruments. He writes about how kids learn to build, think, and create in a tech-saturated world. Read more at hiwavemakers.com.

Sources

1. Nimer, J., & Lundahl, B. (2007). “Animal-assisted therapy: A meta-analysis.” Anthrozoös, 20(3), 225–238.
2. Becker, J. L., Rogers, E. C., & Burrows, B. (2017). “Animal-assisted social skills training for children with autism spectrum disorders.” Anthrozoös, 30(2), 307–326.
3. Bass, M. M., Duchowny, C. A., & Llabre, M. M. (2009). “The effect of therapeutic horseback riding on social functioning in children with autism.” Journal of Autism and Developmental Disorders, 39(9), 1261–1267.
4. Brelsford, V. L., Meints, K., Gee, N. R., & Pfeffer, K. (2017). “Animal-assisted interventions in the classroom — A systematic review.” International Journal of Environmental Research and Public Health, 14(7), 669.
5. Grandgeorge, M., & Mazerolles, M. (2012). “Animal-assisted interventions for individuals with autism spectrum disorder.” PLOS ONE, 7(8), e43842.
6. Selby, A., & Smith-Osborne, A. (2013). “A systematic review of effectiveness of complementary and adjunct therapies and interventions involving equines.” Health Psychology, 32(4), 418–432.
7. IAHAIO. (2014). IAHAIO White Paper: The IAHAIO Definitions for Animal Assisted Intervention. https://iahaio.org/best-practice/white-paper-on-animal-assisted-interventions/
8. PATH International. (2023). Standards for Certification and Accreditation. https://pathintl.org