Introduction 

Animal-assisted therapy (AAT) is a goal-directed modality that utilises animals, and interaction with a therapist to aid feelings and experiences.¹ With its unique ability to enhance physical, emotional, and cognitive well-being, AAT has gained recognition as a complementary therapeutic approach, using animals’ healing power to support and facilitate rehabilitation.^2,3  

Animal-assisted interventions involve the use of specifically trained animals, commonly dogs, cats, and horses, in goal-directed treatment plans.² These animals, guided by animal-assisted therapists, serve as catalysts of positive changes, offering companionship, motivation, a sense of safety, and connectedness to individuals with rehabilitation challenges.⁴ 

This article will walk you through the role of animal-assisted therapy in rehabilitation, highlighting its potential to complement traditional therapeutic approaches and its contribution to holistic recovery for independence and well-being.^1,2

Benefits of animal-assisted therapy in rehabilitation 

AAT aims to promote holistic healing and well-being during rehabilitation, and its benefits can be classified as follows: 

Physical benefits

Improved motor skills and coordination

Gentle interactions like grooming or walking animals can enhance muscle exercise and flexibility. These activities benefit individuals with cerebral palsy or other mobility issues by promoting balance, gait, and posture which are significant for gross and fine motor skill development and mobility improvement.^5,6,7

Increased range of motion and strength

Activities like brushing or petting animals encourage controlled movements, aiding joint flexibility and muscle strength. Muscle contractions induced by such actions enhance the range of motion and strengthen muscles, benefiting rehabilitation efforts.⁸

Enhanced cardiovascular health

Exercising with animals can also elevate heart rate and promote cardiovascular health. Interactions in a relaxed setting can lower blood pressure and heart rate, thereby contributing to overall physical well-being and supporting rehabilitation progress.^9,10

Cognitive benefits

Improved attention and focus 

Animals provide a novel and engaging stimulus that captures an individual's interest, thus enhancing sustained attention during activities. This facilitates cognitive processing and improves task performance.⁷

Enhanced memory function 

The presence of animals can stimulate memory recall and evoke positive emotions associated with past experiences. Animal-intervention therapies involving repetition, sequencing, or recall of learned behaviours can support memory enhancement and retrieval. This has shown to be modestly effective among dementia and Alzheimer’s populations.⁷ 

Cognitive stimulation and problem-solving 

Animal intervention activities, such as training exercises or problem-solving tasks, would require individuals to analyse situations, make decisions, and adapt their strategies. These engagements could foster cognitive flexibility, problem-solving, and critical thinking. 

Social and emotional benefits

Reduced stress, anxiety, and depression

The presence of animals can promote automatic relaxation response, trigger endorphin release, and lower cortisol levels. Thereby, reducing stress, anxiety, and depression symptoms.^7,11

Increased motivation, social interactions, and communication skills

Animals are great motivators, encouraging individuals to engage in therapy for social interaction. As some people may feel safer around animals than humans, communications could be fostered in a calm and relaxing way. Hence, develop closer relationships and better social interaction through animal-assisted activities, which are not possible when being with humans.^11,12

Increased empathy and compassion

Animals would not care who we are. The unconditional positive regard and support from them can boost our self-esteem and self-confidence. Accomplishing tasks along with animals through training and caring, also provides us a sense of achievement and mastery, enhancing overall self-worth and belief in one’s abilities.¹²

Boosted self-esteem and self-confidence

The unconditional acceptance and non-judgemental environment provided through interacting with animals creates a safe and accepting environment. Interacting with animals can thereby promote positive emotions, reduce stress, and encourage social engagement, hence fostering a sense of worthiness and empowerment in individuals.¹² 

Animal selection and training 

AAT has gained recognition as a creative rehabilitation approach in various settings, including physiotherapy, occupational therapy, and mental health treatment. For AAT to achieve a successful outcome, the following factors need to be considered for animal selection and training:   

Appropriate therapeutic animals choice for specific needs

Different animals have unique characteristics and abilities that make them suitable for specific therapeutic purposes. 

Below is a brief categorisation of appropriate therapeutic animals for specific needs according to animal types:^1-13

Given the generalised categorisation above, it is essential to take individual preferences, allergies, and comfort levels into consideration depending on the individual. 

Ensuring well-trained, certified animals for therapeutic work

Among AAT, the screening criteria for therapeutic animals vary. It requires the animal to be of a certain age, have attained the necessary level of training with certification, and comply with defined obedience commands. For instance, therapy dogs will be taken to hospital grounds several times to familiarise them with the ambulance sounds, wheelchairs, and the general hustle and bustle. “Leave of command” will also be trained, in which the therapy dog will not eat stray pills on the ground, or the unfinished meal on a patient’s bedside table. 3 basic stages of AAT are:¹³

Other considerations of therapeutic animals

Health, temperament, and species are some other critical considerations when selecting therapeutic animals. 

Therapeutic animals should be in good physical condition, free from infectious diseases, and on up-to-date vaccinations. Regular veterinary check-ups should also be conducted to monitor their overall well-being. 

Animals’ temperament is essential to ensure they can handle the demands of therapy work. Selected animals should be friendly, calm, and comfortable interacting with people, especially in stressful or challenging situations. 

Furthermore, species of therapeutic animals should also be considered based on the specific needs of clients. Different types of animals would have unique qualities that can contribute to the therapeutic process, depending on the diverse needs of clients.

Integration of AAT in rehabilitation programs 

Physical rehabilitation

Animals could add an element of joy, touch, and engagement to facilitate movements and enhance therapeutic effectiveness in physical rehabilitation. Animals could inspire patients to surpass their limitations and achieve their milestones, fostering a sense of accomplishment and positivity. Harnessing the positive therapeutic bond in human-animal interaction can encourage movement, improve coordination, and promote independence. Thereby,  elevating the overall experience to facilitate physical recovery.^14,15

Mental health and emotional rehabilitation

Individuals can express emotions more freely and form deeper connections when provided with a safe space for healing and emotional release. This has been effective in trauma recovery. Regardless of whether they are interacting or caring for therapeutic animals, particularly in cases of addiction, autism, depression, low achievement, and interpersonal difficulties, they could experience depression/anxiety reduction, improved mood, calmness, self-soothing, and enhanced emotional resilience. By promoting prosocial behaviours and meaningful connections, AAT can thus provide a holistic pathway towards healing and emotional well-being.^13,16 

Occupational rehabilitation

Patients could engage in dynamic, meaningful activities by integrating animals into occupational rehabilitation, facilitating independence and skill development. AAT can play a crucial role in vocational training and job skill development, in simulating real-world scenarios, and providing opportunities for learning and growth. Thereby, empowering individuals to achieve their vocational goals while promoting emotional well-being and social interaction.^7,15

Ethical considerations and safety guidelines

According to the APA Ethics Code, ethics plays a crucial role in AAT to ensure that therapy is conducted responsibly and respectfully. Some of these include:

• Obtaining informed consent from participants/ legal guardians (when necessary)
• Provision of clear and accurate information about the therapy 
• Respect participants’ autonomy and privacy

Safety and well-being of both patients and therapy animals

Other than the basic ethical guidelines, the safety and well-being of patients and therapy animals should be of the utmost concern. 

Animal welfare

Animals involved in AAT should be well-cared for, receive appropriate veterinary care, and have optimal opportunities for rest, exercise, and social interactions alongside therapy sessions. Working with veterinarians, and animal behaviourists are also crucial to ensure their well-being.

Animal selection and training

Animals used in AAT should be carefully selected based on their temperament, behaviour, and suitability, according to therapy settings. Proper training and socialisation should also be done beforehand, ensuring they are capable of handling various possible situations during therapy sessions. Trained handlers should also be present to guide the animals and ensure their welfare.¹⁷

Boundaries and interactions

Clear guidelines should be established to ensure appropriate boundaries between animals and participants including limits on physical contact and, respecting the animal’s signals and comfort, while monitoring to prevent potential harm to either party.

Additionally, verification of the absence of any breed-specific allergies should be conducted and handlers must be aware of the client's history of fears, phobias, and post-traumatic experiences related to animals.¹⁷

Proper hygiene and infection control measures

Though the risk of disease transmission is minimal, precautions (e.g., rigorous health care monitoring of animals), are a must to ensure the safety of both parties (especially for high-risk clients, e.g., immune-suppressed, and hospitalised patients).¹⁷ 

Potential limitations and future considerations 

Lack of standardisation 

AAT lacks standardised protocols and guidelines for implementation. Hence, it is necessary to include standardised training programs for both animals and handlers, ensuring consistency and safety across different therapy settings. 

Limited research 

While there is growing evidence supporting the benefits of AAT, there has been a relative lack of scientific research on its effectiveness and underlying mechanisms. Emphasis should be given to collecting research on evidence-based therapeutic outcomes in different settings in the future. 

Specificity of animal selection

Different animals have varying levels of suitability for specific therapeutic goals. While the species, breed, temperament, and individual characteristics of animals should be taken into consideration, further research is still required to determine the types of animals and their effectiveness for specific rehabilitation goals. 

Generalisation of skills 

Considerations should also be taken upon the degrees of generalisation of skills learned or practised in everyday life. Appropriate strategies should be developed to facilitate the transfer of skills and behaviours learned in the presence of therapy animals to real-world scenarios. 

Cost and accessibility 

While AAT can be costly, and there is limited availability of trained animals, particularly in certain specialised rehabilitation settings, efforts should be made to expand the accessibility and affordability of AAT to benefit a wider population.

Cultural sensitivity 

Individuals of different cultural backgrounds, ethnic groups, and religions could have varying attitudes and beliefs regarding animals. This can adversely affect the acceptability and effectiveness of AAT. In this regard, adapting AAT with respect to cultural factors can foster the alignment of values and preferences to a diverse population.¹⁷  

Summary

Animal-assisted therapy (AAT) has emerged as complementary to traditional rehabilitation modalities, offering a wide range of benefits to patients. As bonding between humans and animals can facilitate physical, cognitive, emotional, and social functioning, it is effective in rehabilitation for individuals with various conditions, such as physical disabilities, cognitive decline, mental health issues, and interpersonal difficulties. While appropriate animal choices and training, along with defining clear therapeutic goals are considered essential for successful outcomes,  it is also important to consider animal and patient safety, hygiene, and ethical treatment. Further research on improving effectivenss of AAT and addressing its potential limitations related to standradisation is essential to enhance rehabilitation efforts and patients quality of life.