Dr. John Arnold was born in Seal Beach California and has practiced as a veterinarian in Nevada, California, Oregon, and Colorado. John is a proud CSU Ram, he attended Colorado State University for his BS in Zoology, MBA, and DVM. While attending the CSU School of Veterinary Medicine he met his future wife who is now a Board Certified Veterinary Surgeon and Surgical Oncology Fellow. Both Dr. Arnold and his wife graduated with the class of 2006.

John’s proudest accomplishment is being a father to his daughter Rylee Rose, who was born in May of 2015 and is quickly turning out to be an avid rock climber and hiker like her dad. In addition to enjoying rock climbing and hiking with his family and border collie mix, Lucy, he also enjoys playing ice hockey, soccer, and traveling. Dr. Arnold first joined the Raintree family in 2008 and in addition to practicing traditional veterinary medicine is also AAVMA Certified in Veterinary Acupuncture.

Some of his professional interests include cancer management, pain management, surgery, anesthesia, dermatology, and strengthening the human-animal bond. You may see John climbing or biking around Horsetooth or up Poudre Canyon… or enjoying his favorite meal (Brunch) with his daughter downtown. John is still actively involved at CSU. He serves on the Curriculum Committee for the CSU Doctor of Veterinary Medicine program. You may see him on campus giving presentations to the Pre-vet club or meeting with graduate students on what life is like as a practicing veterinarian. John also started a mentoring program at Raintree that gives future veterinarians an idea of what life is like at the hospital.

Dr. Sara Sheltren grew up in Southern California and earned her Bachelor of Science degree from the University of California, Santa Barbara. She then moved to the island of St. Kitts, West Indies, where she would experience many amazing adventures while attending Ross University, School of Veterinary Medicine. After completing clinical rotations at Oregon State University, she earned her DVM degree in 2009. In addition, Dr. Sheltren’s interest in alternative medicine led her to complete her acupuncture certification from IVAS in 2012. After practicing in the beautiful Pacific Northwest for many years, she moved on to her next adventure in Fort Collins after her son was born. She joined the Raintree family in 2018. Her special areas of interest include soft tissue surgery, acupuncture, internal medicine, and pain management. She also earned her Fear Free Certification in 2018 and is excited to use these skills to decrease stress for her patients as well as strengthen the human-animal bond.

In her free time, Sara enjoys spending time with her husband, son, two dogs, and two cats and exploring all that the beautiful state of Colorado has to offer!

Upon graduation, she remained in Fort Collins where she met her husband, Steve, worked as a veterinary technician and continued on to attend veterinary school at Colorado State University. Dr. Holwegner has worked in small animal private practices in northern Colorado and Thornton prior to joining the Raintree team. Her interests include internal medicine, diagnostic imaging, and the human-animal bond.

Blair and her husband share their home with their dog Evie, their cat Griz, and their parakeet Charlie. She enjoys singing, gardening, being outdoors, and is an avid bird watcher.

Susan was born and raised in the northwest suburbs of Chicago. In the summer of ’97, she moved to the wonderful state of Colorado to attend Colorado State University. In 2001, she graduated with a BS in Wildlife Biology. Susan wanted to broaden her animal education, so she completed the Veterinary Technician Program at Front Range Community College and in 2004 become a certified veterinary technician. Since then she has had the pleasure of working at Colorado State University Veterinary Teaching Hospital in various small animal services, such as Community Practice, Internal Medicine, and Dentistry and Oral Surgery.

In July 2013, she joined the RAH team as practice manager. Outside of work Susan stays busy with her family, loves to dabble with photography, gardening, and enjoys every opportunity she gets going to the mountains.

Sarah was born and raised in Denver Colorado. She moved to Fort Collins in 2000 to attend Colorado State University. In 2005 she graduated with a bachelor’s degree in Biology and in Animal Sciences. She joined the Raintree staff in January 2006. Outside of work she enjoys spending time with her husband Ryan and sons Brendan and Ryder. She also enjoys sewing, reading, playing music, hiking, and 4-wheeling in the mountains.

Stephanie is a Fort Collins native who is excited to be a part of the Raintree Animal Hospital team! As an avid animal lover, she always knew she wanted to work in the field of veterinary medicine. After completing Veterinary Assistant coursework at Front Range, she discovered her true calling was in making connections with clients. When not working, she enjoys watching scary movies, completing jigsaw puzzles, and spending time with her husband, Brandon, who shares her passion for animals. Together they have been fortunate enough to adopt 4 retired racing greyhounds over the past 11 years, including their two current goofy greyhounds, Mulder and Scully.

Lilah is a Colorado transplant who originally grew up on a small farm in Vermont. She moved out west back in 2016 and has lived in Jackson Hole WY, Steamboat Springs, Aspen, and has now settled in Fort Collins in hopes to pursue her lifelong dream of becoming a Park Ranger. When she is not working she loves to spend her time hiking, camping, practicing her photography, and spending time at home with her kitten Pistachio and her foster cats from the Fort Collins Cat Rescue.

Brooke was born and raised in Fort Collins, Colorado, and has lived here her whole life. She recently graduated from Poudre High School and was involved in FFA. Over the last year, she recently studied at Front Range Community College. She loves to spend her time with her dog, Jaxx. In her free time, she loves going on adventures, including four-wheeling, paddleboarding, and hiking. Brooke hopes to one day move up in the veterinary field and continue growing her love for animals.

Alex is a Fort Collins native with a love of animals and his home in Colorado. He graduated from CSU in 2020 with a bachelor’s in Communications and a minor in German language. Having studied abroad in Bavaria, Alex will eagerly speak German any chance he gets. He jumped at the opportunity to join the Raintree team so he could work around animals and help owners make sure their furry or scaly family members are getting the best care available. An avid nerd for video games, cars, and all things Star Wars, he spends most of his free time relaxing at home with a cat nearby.

Roxanne was born and raised in Peoria, Arizona, a suburb of Phoenix. She went to the University of Arizona for her B.S. in Veterinary Sciences, where she participated in the Pre-Vet Club, Collegiate Livestock Growers Association, and even competed on the Triathlon team. Roxanne grew up competitively swimming and traveling many states to compete, which is how she found her love for Colorado. She then moved up to Fort Collins after graduating college and worked as an aquatics coordinator and club swim coach before joining RAH. Roxanne plans on getting her veterinary technician certification soon and then pursuing vet school after. She absolutely loves seeing all the cute creatures that come into our facility every day and being able to help them lead healthy lives.

Arielle grew up in Colorado and initially came to Fort Collins in 2010 to pursue a bachelor’s degree in Zoology. After moving to Denver for a couple years she came back to continue her higher education journey with a master’s program in Zoology. Arielle has been a tech for the past 3 years and strives to live out her dream of working with big cats in captivity in the next few years. When she isn’t TAing at CSU or working at Raintree Arielle loves getting outside with her little pack of dogs, Tate, Kiah, and Akino, cuddling with her cats, or taking a trip down the slopes.

Jaime graduated from Front Range Community College in 2012 with a Veterinary Tech Assistant Certificate and loves working here at Raintree Animal Hospital. Aside from helping clients and loving on the patients, Jaime truly enjoys obsessively cleaning everything and unpacking the weekly order. Outside of work, you’ll find Jaime hanging out with her family and friends, singing in the car, or taking a little mid-day snooze on the couch. She shares her house with her sister Jessie, three dogs (Princess Adelaide Victoria Peach III, Louie, and Dylan), two cats (Bella and Buttonlicious), and two rats (Beethoven and Socrates).

Jessi is finishing up her undergraduate at CSU and getting a bachelor’s degree in both Biology and History. She is an aspiring veterinarian and loves to constantly learn, especially in the medical field, which is why she loves her job as a veterinary assistant and working with patients at Raintree. In her free time, Jessi loves to hike with her two dogs and husband, read, and horseback ride. She is part of a group called Knights of the Tempest where she does medieval horseback riding and even jousts!

Rylee is a Colorado native and graduated with a degree in Equine Science from CSU. When she isn’t working she loves to shred the mountains, go running with her exuberant German shepherd, and hang out with her ducks. Her favorite type of weather is a balmy 72, with the sun shining down on her so she can ride her horse. Although she is newer to the veterinary field, she strives to fine-tune her technician skills and expand her ability to help animals large and small. Here at Raintree, when she isn’t taking care of our furry patients, Rylee is our resident sharpie thief.

Natalie was born and raised in North Carolina but has also lived in Texas, New Mexico, and Nebraska. Now she lives here in Fort Collins, where she recently graduated with her Associate Degree of Applied Science in Veterinary Technology. Natalie loves learning more and more about the veterinary field and aspires to go to Vet school in the near future. In her free time, she loves exploring the outdoors, being with friends, or snuggled up with her cat named Mouse!

Courtney was born and raised in Colorado and graduated from Front Range Community College with an Associate of Applied Science degree in Veterinary Technology in December 2020; she passed her VTNE and became a CVT in June 2021. Courtney loves working with animals of all kinds but holds a special place in her heart for reptiles! Courtney and her husband have two senior cats, Rex and Oatie, a crested gecko, Onion, a Dekay’s brown snake, Lasagna, and two blind cave tetras, Grits and Gouda. Courtney loves spending her free time hiking, crafting, and watching horror movies.

Kaitlyn was born and raised in Colorado and enjoys all things natives are required to – hiking, camping, snowshoeing, concerts at Red Rocks, and craft beer. Kaitlyn has known that she wanted to pursue a career in veterinary medicine since she was eight years old. Following a brief 10 year detour in the fine dining industry after high school, she is thrilled to be gaining a wealth of knowledge and experience at Raintree. She is currently enrolled in a veterinary technology program through Penn Foster. 

Born in a small town in west Florida, Devyn was always surrounded by animals. She grew up watching Steve Irwin on tv and spent most of her time playing with her pets and critters in her backyard. It was at that young age that she decided her passion was animals. Devyn spent the rest of her life dedicated to helping them and learning more about what she could do. In high school, she became a Certified Veterinary Assistant and later decided to move to Colorado to pursue a career in veterinary medicine. It was here that she began working her first job as a veterinary technician, and fell in love with it. What Devyn loves most about her job is getting to know more people and their pets, and making sure they know their pets are in good hands. In her free time, Devyn enjoys writing and spending time with her boys; her corgi Tyrion, her cat Jet, and her boyfriend River. The four of them all like to go on walks and enjoy group cuddles while watching movies. For her future goals, Devyn hopes to pursue a veterinary technician degree and begin working as a technician at a wildlife zoo or reserve, so she can work on larger, more exotic animals. As a kid, she always dreamt of holding her hand up to a lion’s paw, and she still insists on making that dream a reality.

Chandler was born in Jacksonville, Florida, but has been in Fort Collins most of her life. She is currently studying towards a Zoology major and Entomology minor, in hopes of one day being a zookeeper or working in conservation. She enjoys animals of all shapes and sizes and their husbandry in all forms but has a soft spot towards dogs and tarantulas. Chandler loves spending her workdays at Raintree getting to care for the dogs, cats, and exotics, and loves getting to do the same thing once she gets home to her own animals. During her free time she loves naps, junk food, video games, movies, and anything involving her dog, Poe.

Carter was born and raised in Colorado and has lived in Fort Collins most of his life. He is incredibly avid about the outdoors and, more specifically, winter. By far, winter is his favorite time of year. His interests include snowboarding any chance he can get, and you can always catch him watching anything Star Wars. Carter has two rescued animals; a calico cat named Appa and a Pit Bull named Pebbles.