Meet the Behavior Team

Building Stronger Relationships through Positive Reinforcement.
The ARL believes in teaching and rewarding your pet for desirable behavior and redirecting undesirable behaviors to appropriate ones. Training should be fun and rewarding for both you and your dog and it’s a great way to develop a bond with your dog. The goal of our training program is to keep your dog in a loving home and to help them become a well-behaved companion.
We offer reasonably priced training classes for people and their dogs, with the proceeds directly helping the pets waiting for their forever homes. All of our classes, from puppy basics to specialty classes, are offered on both weeknights and weekends.
Our knowledgeable instructors use positive-reinforcement training methods. All of our classes are taught using the clicker method, the same training method we use with animals at the shelter. Our instructors regularly attend conferences and education programs to ensure that they are providing the most up-to-date and humane training techniques.
Five Freedoms
These Five Freedoms are globally recognized as the gold standard in animal welfare, encompassing both the mental and physical well-being of animals; not only should we think of this for organizations that house animals but for our family pet as well:
- Freedom from hunger and thirst: by access to fresh water and diet to maintain health and vigor
- Freedom from discomfort: by providing an appropriate environment including shelter and a comfortable resting area
- Freedom from pain, injury, or disease: by prevention or rapid diagnosis and treatment
- Freedom to express normal behavior: by providing sufficient space, proper facilities and company of the animal’s own kind
- Freedom from fear and distress: by ensuring conditions and treatment which avoid mental suffering
Animal Stress Reduction
Shelter Stress Reduction is a daily requirement of all Staff/Volunteers that care or handle animals at the Animal Rescue League. By reducing the feelings of stress in our animals it will result in a better experience for all involved — animals and people included. For over a decade we have been working on new and exciting stress reduction practices at the ARL, from the design of the building, staying up-to-date with research, training of staff/volunteers, and understanding each animal’s specific needs and wants.
Animal Care is much more than food, water and disease control. We must ensure that those needs are met, but we also go above and beyond to ensure that their mental wellbeing is of the highest priority. Stress is a normal part of life for all of us but it should not be so overbearing that it changes behavior or causes health related issues.
Each day we provide every animal with the ability to express natural behavior and make Positive Associations at Sub-Threshold (P.A.S.T) with any and all situations that they encounter in our care. This creates a positive association/less stressful aspect of shelter life for our animals. The efforts to reduce stress include but are not limited to, daily Enrichment, the Ability to Express Natural Behaviors, Positive Reinforcement Training, minimizing loud noises, reducing barking (Bark-less Kennels), and Quiet Time. We also minimize smells since dogs and cats have a keen sense of smell and keep familiar items with them throughout their stay.
During medical procedure we also use DAP and Feliway, on surfaces, equipment, and ourselves. When you walk through the shelter you will also hear calming music and see TV’s for visual stimulation.. Lights are switched off throughout the day to allow animals to have down time. When moving a pet around in the shelter, whether it be for a walk outside, physical exam, or behavior evaluation/training, this is done slowly and calmly, avoiding any stimuli that can cause fear, anxiety and stress.

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Get to know the ARL's Behavior Team!

Cassandra Johnson
Dog Behavior & Enrichment Supervisor
CJohnson@arl-iowa.org
515-473-9125
Cassandra arrived at the Animal Rescue League of Iowa in 2013 starting work as an Animal Care Technician. Shortly after starting she knew she wanted to do more to help dogs feel more comfortable during their stay at the Animal Rescue League of Iowa and began working part-time with the behavior department six months after her arrival. In 2013 Cassandra joined the Dog Behavior Team full time overseeing the shelter’s enrichment programs, behavior modification programs, and private consulting and training for members of the public. During her time at the ARL she has gone to many conferences (The Association of Professional Dog Trainers, The Humane Society of the United States Animal Care Expo, The Association for Animal Welfare Advancement, Ken Ramirez, Karen Pryor Clicker Expo) and strives to seek continual knowledge to help not only homeless pets, but owners. One of Cassandra’s favorite things about the ARL is working with fearful or reactive dogs helping them modify their behavior and placing them into homes that are a good fit for their needs.


Kathryn Vry
Animal Behavior and Enrichment Specialist
KVry@arl-iowa.org
515-473-9131
Kathryn knew her passion was for animals at a young age, and began pursuing whatever opportunities were available to learn more. Bringing a background of canine body language from years of working at a doggy daycare and boarding facility, it became clear her fascination with animals was their behavior. Joining the Animal Rescue League of Iowa’s Dog Behavior Team in 2019, Kathryn jumped headfirst into animal behavior, ready to learn more about not only dogs, but also other species. Currently she oversees dog training classes, as well as works with shelter behavior for dog, cat, and horse. Kathryn is a graduate of Iowa State University with a Bachelor’s Degree in Animal Science, and is a certified Fear Free Professional. She is always striving to learn more about how to help the animals she interacts with, and enjoys thinking of new ways to benefit the animals around her. One of her favorite parts is seeing the positive changes made between dog owners and their dog, and helping them have fun while doing it.




Alex Purvis
Animal Behavior and Enrichment Specialist
apurvis@arl-iowa.org
(515) 686-8411
Alex arrived at the Animal Rescue League of Iowa in 2021, starting as an Animal Care Technician. After spending most of the year caring for the dogs, specifically in the Dog Behavior routine, as well as sitting in on behavior assessments, he wanted to work more with the behavior of the dogs in shelter. He joined the Behavior team at the beginning of 2023, focusing on helping the dogs overcome their stress and fears from being in the shelter. He took an interest in using different kinds of enrichment, both in the shelter environment and the real world. One of Alex’s favorite things about the ARL is helping the more under-socialized dogs build confidence, helping them learn that the world isn’t so scary, and prepare for their next home.
