IHS
Leadership
Jeff Rosenthal, DVM
Chief Executive Officer
2025 marks Jeff’s 25th year with the Idaho Humane Society. After graduating from Washington State University College of Veterinary Medicine, he practiced as a small animal practitioner in Southern Oregon for 7 years prior to becoming Medical Director for the IHS’s Veterinary Medical Center in 2000. In 2002, he transitioned to become the Chief Executive Officer of IHS.
During his time in leadership, the organization has seen dramatic improvement in the save rate for sheltered pets alongside the creation of innovative programs such as our correctional facility-based dog training program, expansion of spay and neuter efforts, our Pet Food Pantry, and the expansion of full-service low-cost veterinary care for public clients. The number of employees has more than doubled, and he oversaw a successful 16 million dollar Capital Campaign to complete our new Adoption, Veterinary Medical, and Humane Education Centers. He is also credited for significant improvements to Idaho’s animal welfare laws including a crucial law providing for the forfeiture of abused animals from those who treat them with neglect or cruelty, a felony animal fighting statute, and the State’s at-risk and dangerous dog statute.
An unusual feature of his role at the Idaho Humane Society comes from a career-long interest and extensive training in veterinary orthopedic surgery. In addition to fulfilling all the responsibilities of CEO, each and every week Jeff continues to provide advanced orthopedic procedures for shelter and publicly owned pets. This expertise within an animal shelter is unique and allows us to restore pain-free mobility to hundreds of pets each year.
Jeff’s family moved to Boise in 1980, and he was excited to return to our community. His entire immediate family lives in Boise.
angela costanzo
Chief People Officer
Angela joined the Idaho Humane Society in May 2023. Born and raised in Idaho, she deeply appreciates everything her home state has to offer and couldn’t imagine residing anywhere else.
Angela has over 25 years of experience in human resources and safety management, having worked across diverse industries such as manufacturing and construction. Her passion for HR stems from her enjoyment of working directly with employees and serving as an advocate for the company. Angela remains committed to ensuring the well-being of individuals, constantly striving to maintain a safe and injury-free environment. She is also certified through OSHA as a Safety & Health General Industry Specialist and a Safety & Health Construction Specialist.
In her personal life, Angela shares her home with two beloved American Staffordshire Terriers named Angel and Tyson. Their presence is such that Angela playfully recounts how she and her husband had to invest in a king-size bed to ensure their dogs’ utmost comfort during the night. During her leisure time, Angela cherishes moments spent with her family, all of whom reside locally.
Dr. Adrian Dannis
Director of shelter medicine
Dr. Dannis joined the Idaho Humane Society in 2021 after graduating from the Cummings School of Veterinary Medicine at Tufts University in Massachusetts. There she was the president of the Shelter Medicine Club and Feline Medicine Club. One of her highlights while in vet school was traveling to Africa as a fourth year with Kenyan & Danish veterinary students sterilizing Kenyan free-roaming dogs.
Dr. Dannis has owned various pets since childhood, including dogs, cats, chickens, hamsters, guinea pigs, and a turtle; she always knew she wanted to be a veterinarian. After a year-long rotating internship at a Boston veterinary hospital, she moved to Boise to work at the Idaho Humane Society without visiting the state. She has since fallen in love with biking the greenbelt, trying not to kill her garden, hiking, exploring downtown Boise and attending various events.
She currently has two shelter cats at home, Juniper and Snooki, and two dogs, Birdie (a Shiba Inu) and Rory (an Australian Shepherd). Dr. Dannis is most passionate about access to veterinary care and providing shelter animals with the same compassion and care she would want for her own pets.
LAURIE DART
VETERINARY TECHNICIAN SUPERVISOR
Laurie started volunteering for the Idaho Humane Society through a veterinary assistant program in 1991 when she was 21 years old. When she completed her volunteer hours, she was offered a job as a veterinary assistant and eventually became a veterinary technician. Laurie has had her CET license since 1993 and received her CVT license in 2003. In addition to her work at IHS, she has filled in and worked part-time at other veterinary hospitals around the valley.
Laurie has two dogs (Libby and Opie), one black Angus cow (Dorkiss), three horses (Gypsy, Poco, and Arizona), twenty-five chickens and two Bourbon Red turkeys. Outside of work, Laurie enjoys spending time with her family and her daughter Kimber, who she describes as her pride and joy. Together they camp, fish, hunt and do 3D archery shoots.
Leann Gilberg
Chief Financial Officer
When Leann came aboard as the Idaho Humane Society’s CFO in 2012, she’d already been involved with the organization for over half a decade, previously serving on the board of directors as well as the finance committee. Leann grew up with animals and loves working for a cause so near and dear to her heart. She and her family live with three IHS alums – two dogs, Bella and Jackson, and one cat, Callie.
Originally from Montana, Leann has called Boise home for more than 20 years. She holds a bachelor’s degree in business administration with a minor in political science from the University of Montana and has been a CPA since 1992.
In addition to watching her kids play sports and coaching her daughter’s lacrosse team, Leann likes to play tennis in her spare time.
Vanessa Grenier
Behavior Manager & Lead Dog Trainer
Vanessa Grenier is a certified professional dog trainer who has been training dogs for over a decade. She is an Animal Behavior College graduate, certified in shelter training and enrichment by Karen Pryor Academy, certified in evaluation techniques for detection dogs and has hundreds of CEUs in a variety of other training methods and techniques.
She is always attending new seminars and classes to remain up to date in the most effective training methods and loves learning more ways that she can help pets and their owners. Vanessa has been involved in training at the Idaho Humane Society for 8 years, helping with our public training programs as well as providing staff training, dog evaluations, and building our training and enrichment programs for shelter animals.
Christina Hines
Volunteer Program Manager
Chris was overjoyed to join the Idaho Humane Society in June of 2024 and has been an advocate for animal welfare since she was a little girl. Born and raised in Chicago, her family relocated to Idaho when she was a teenager and she chose to make Boise her forever home in 2010. Prior to joining the IHS staff, Chris worked in Education as a math/science teacher as well as providing one-to-one assistance as a Behavior Interventionist for students with exceptional needs. She is excited to be coordinating the IHS volunteers and is looking forward to expanding the program.
In her personal life, Chris enjoys bird watching and singing in a local choir. She currently shares her life with a cat named Mugatu and is grateful that he considers her to be worthy of sharing his space and time.
Brittany Jenks
Pets for Life Program Manager
Brittany was born and raised in Boise, joining the Idaho Humane Society in 2008. Since that time, she has held a variety of positions including front desk and animal care before becoming the animal care manager in 2014. After varying roles within the Idaho Humane Society, she became the Pets for Life program manager in 2020. She enjoys the ability to apply what she has learned during her time in animal sheltering to better serve the clients within the PFL outreach community.
Brittany has two dogs, Doogie and Squish, and a cat named Daenerys, all being IHS alumni. In her spare time, she loves crafting, traveling, and tending to her houseplants and pets.
Jacci Jensen
Veterinary Practice Manager
Jacci joined IHS in October 2024, bringing over 15 years of veterinary experience, including four years in practice management. Throughout her career, she has taken on various roles in veterinary clinics, working as a veterinary assistant, technician, receptionist, and in many other capacities.
Originally from Plymouth, Utah—a small town of about 400 people near the Idaho border—Jacci has always had a strong connection to animals and rural communities.
Before moving to Idaho, she spent a decade in Tucson, Arizona—the longest she had lived in one place since joining the Navy in 2002, right out of high school. Jacci earned a bachelor’s degree in veterinary science from the University of Arizona in 2016.
After years of visiting and volunteering at the Caldwell Night Rodeo, Jacci and her fiancé, John Paul, made the decision to move to Idaho nearly a year ago. At home, she shares her life with two beloved dogs: Zoey, a 7-year-old blind French Bulldog rescued over three years ago, and Cletus, a 5-year-old Basset Hound. Outside of work, Jacci enjoys exploring the mountains on a side-by-side, fishing, watching NASCAR and rodeo, and unwinding with reality TV.
Krystal Keith
Assistant Director of Operations
Krystal is an Idaho native, raised in Colorado. She studied animal science at Washington State University and moved back to the Treasure Valley in 2013. She joined the Idaho Humane Society animal care team with the goal of becoming a veterinarian while advocating for animal welfare and championing those in need.
A lover of animals, Krystal adopted her Catahoula mix Phoenix from the shelter; his favorite things on the planet (besides food!) are spicy kittens when he isn’t getting to know other dogs are the shelter. Krystal also has a wild child BLM mustang named Hiccup, and a tiny black panther, aka cat named Peaches. Krystal enjoys fostering stressed-out medical cats and, when not working, enjoys reading, camping, hunting, playing softball, and traveling to places she’s never been.
Morris McCall
Facilities Manager
Morris has been with the Idaho Humane Society since 1985, working on the shelter staff and then as an animal control officer before becoming the supervisor in 2003. He has Idaho Fish and Game chemical capture, FEMA community emergency response, shelter operation manager, and large-scale seizure certifications.
Morris has lived in Boise for 52 years. He has two dogs and loves to enjoy the outdoors.
Craig Nixon
Animal Control Director
Craig moved to Idaho to attend The College of Idaho to continue his college education and pursue playing collegiate baseball. It did not take long until he realized that this move to Idaho from California would change his outlook on life and his appreciation for what Idaho has to offer.
In April 2023, Craig joined the Idaho Humane Society as the Director of Animal Care and Control. Soon thereafter, Craig retired from the Boise Police Department after serving the Boise community for 25 years. During that time, Craig held several positions within BPD, but ended his career as a Sergeant for the Bike Patrol Unit and as one of the last remaining original members of the Boise Police Honor Guard – two of the most rewarding duties held during his law enforcement career. The transition from the Boise Police Department to the Idaho Humane Society has also been worthwhile, as it has allowed Craig to combine his experience in law enforcement with his love for animals.
Craig has two pets – Kali who was adopted from IHS in 2016, and a cat named Cleo. When not working, Craig enjoys spending time with his wife and family, traveling, and playing golf (even on bad days).
Mareesa Rule
Development & Stewardship Director
Mareesa Rule joined the Idaho Humane Society in early 2025. Originally from Vancouver, Washington, she came to Boise to attend Boise State University and quickly fell in love with the community, making it her home.
Before joining IHS, she championed causes close to her heart championing causes like T1D research and facilitating local Thanksgiving Food Box distributions and Christmas Toy Drives. She is passionate about building strong partnerships, creating memorable events, and finding creative ways to bring the community together around our shared compassion.
Mareesa believes every animal deserves love, safety, and a second chance, and she feels grateful every day to help make that belief a reality. Her favorite part of the job is connecting community members with the mission and showing them how their generosity transforms the lives of both those with two legs and those with four.
Mareesa enjoys walking the Boise Greenbelt, searching for the best vanilla latte, and most of all…spending time with her dog Scoobie, who reminds her every day why this work matters so deeply.
Kandice Santo
Adoptions Manager
Born and raised in Boise, Idaho, Kandice has always had a deep love for animals. She joined the Idaho Humane Society in September 2021 as an Animal Care Associate and quickly transitioned to a full-time role. Her dedication led to a promotion to supervisor, and she later became Shelter Manager in January 2025.
She has always been surrounded by animals, growing up with dogs, cats, turtles, birds, hamsters, fish, and ducks. Her passion for animal care has been a lifelong journey. Before joining IHS, she spent several years as an in-home caregiver, including working in hospice care.
At home, she shares her life with her children, Brogen and Javin, and their sassy rescued cat, Tea. Outside of work, she enjoys cooking, gardening, collecting antiques, and spending quality time with her family watching movies, attending concerts, and exploring new dining experiences.
Kristine Schellhaas
Public Information Officer
Kristine joined the Idaho Humane Society in late 2017. After her husband retired from the US Marine Corps, their family moved back home to Boise where she was able to realize her goal of working to make a difference for animals.
Previous to joining IHS, Kristine founded and sold a digital media company. She is also a published author, keynote speaker, and has dedicated more than 10,000 volunteer hours serving the military community. She has served as a national board member for several charities to include the Military Family Advisory Network, Military Officer Association of America’s Spouse Advisory Council, and several local non-profits.
Kristine’s family has four dogs ranging from Small to Extra Large. She holds a master’s degree from Gonzaga University and two bachelor’s degrees from Boise State. In her spare time, Kristine enjoys traveling, reading, gardening, and celebrating life with friends.
Kristopher Shaffer
Chief Operations Officer
Kris began his animal welfare journey in 2014 when he worked with the Arizona Humane Society. During his time with AHS, he was fortunate to gain experience across many operational departments and take advantage of several educational opportunities. Next, he found himself running shelter operations at a mid-sized rescue in Tempe, Arizona, whose primary mission was providing temporary care for animals whose owners were in distress or had fallen on tough times.
Most recently, he was the Assistant Director of Animal Management for a municipality in Texas. While in Texas, Kris gained experience with code enforcement, investigations, and emergency response. Kris holds a bachelor’s degree in political science from Arizona State University and an Animal Shelter Management Certificate from the University of the Pacific. He has received training through several organizations during his time in animal welfare, including Emancipet, Maddie’s Fund, and Austin Pets Alive!
Kris, a Boise native, is thrilled to return after more than three decades away. He looks forward to spending more time with his extended family and parents. Kris shares his free time with Daisy, Badger, and Paul, three rambunctious rescues from Texas.
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