Oahe Veterinary Clinic is a mixed animal practice located in central South Dakota. He grew up in Lenora, KS. In 1991, Dr. Wolf became a partner in Oahe Vet.
Dr. Jim Wolf, DVM
Dr. Wolf joined Oahe Veterinary Clinic in 1990, after graduating from Kansas State University Veterinary School. Dr. Wolf studied his undergraduate at KSU where is earned a degree in Animal Science and Industry. Dr. Jim and his wife Renee have two kids: Christa and Jamie. In his free time, Dr. Jim likes to hunt and fish. Dr. Jeff Ehrenfried, DVM
Dr. Ehrenfried started with Oahe
Vet in 1992, after graduating from Kansas State University Veterinary School. He grew up in Norfolk, NE and attended University of Nebraska Lincoln where he obtained his B.S. in Animal Science and minored in chemistry and biology. After 2 years of being an associate with the clinic, Dr. Ehrenfried became a partner in 1994. He and his wife Karlee have three kids: Garrett, Miranda and Becca. Dr. Jeff enjoys hunting, fishing, golf, sports and playing the guitar. Dr. Heather Osnes, DVM
Dr. Osnes joined Oahe Veterinary Clinic in June of 2010, after graduating from Iowa State University. She is originally from Kennebec, SD where she graduated from Lyman High School before attending South Dakota State University and obtaining her B.S. in animal science. Dr. Osnes enjoys doing small animal, equine and cattle work. She lives in Pierre with her husband Drew and their two boys, Charlie and Beckett. Dr. Broc Mauch, DVM
Dr. Broc joined Oahe Veterinary Clinic in May of 2023. He is a graduate of Iowa State University College of Veterinary Medicine. Dr. Broc is originally from Yankton, SD and went to South Dakota State University for his undergraduate degree in animal science. Dr. Broc enjoys both large and small animal appointments. He, his wife, and their two dogs, enjoy all the outdoor activities that Pierre and Ft. Pierre have to offer. Sarah Sass, LVT
Sarah came to Oahe Vet in 2003 after graduating with her veterinary technician degree from NCTA in Curtis, NE. Sarah is originally from Mitchell, SD. She helps with all aspects and daily routines in the clinic. One of her favorite duties as a technician is educating clients on different topics of pet health care. She and her husband Jason live in Blunt with their daughter Stazy Jo. She enjoys throwing darts, camping, and reading. Elizabeth Medcalf, LVT
Liz graduated from National American University in 2011, and after doing her externship with Oahe Vet, she stayed on as a full time technician. She is originally from Pierre, SD. Liz helps with both small and large animal duties. Her favorite technician jobs include helping with small animal surgeries and equine patients. They currently live in Fort Pierre and have three kids.
07/02/2025
Ready for weekend?
While there's a lot of fun in store for this holiday, it is crucial to be aware of the safety of the pets in your community. Check out these tips from our experts at the ASPCA Animal Poison Control Center and help us by sharing them. For more information on July 4th pet toxins, go here. 🐶🐱 https://www.aspcapro.org/resource/top-4-july-4th-pet-toxins
06/30/2025
📢Just a reminder📢
Our office will be closed this Friday so our staff can spend the holiday with their family and friends🇺🇸.
If you need medications, food, or vaccines please stop in before Friday and we can get you set!
06/25/2025
The one and only- it’s his birthday! If you are around the clinic today, make sure to stop by and tell Dr. Broc Happy Birthday! We won’t tell you his age, because sometimes we wonder…..but one thing that we do know is that we are glad he is part of our team!
06/24/2025
🧨The 4th of July is right around the counter🇺🇸💥!
Many pets have a fear of fireworks, but we have options to help make this holiday a little more comfortable for them. Give us a call today (not July 3rd😉!) to talk with our staff or get an appointment made so we can help your pet through this loud and exciting holiday🇺🇸!
06/19/2025
Sharing this since we have so many equine athletes in town, and the weather is supposed to heat up! Stay safe!
Have you ever been told to not allow a hot, sweaty horse to drink cold water because it could lead to colic, founder or tie up?
This notion is actually a myth, and a dangerous one too, because it could lead to dehydration and very serious (and real) consequences. A sweaty, hardworking horse needs to be rehydrated without delay (i.e. don’t wait for the horse to cool down first).
The key, however, is to know how much water to allow at one time — because of the equine stomach’s relatively small capacity, offer small amounts of water every 20 minutes until the horse drinks his fill rather than letting the animal drink it all at once.
Remember that water is the most vital nutrient for a horse. A horse’s daily water requirements are influenced by many factors, but the average idle 1,100-pound horse in a cool environment will drink 6 to 10 gallons of water per day. That amount may easily double or triple in a hot environment! Therefore, it goes without saying that providing cool, clean water to your horses at all times is of paramount importance.
We would like to welcome all the participants and their families to the South Dakota High School Rodeo finals! Good luck, have fun and be safe!
06/06/2025
When we running Coggins Tests, we are testing for this disease- Equine Infectious Anemia. There is NO Treatment for this disease. Please take a minute to look over this information provided by the American Association of Equine Practitioners.
05/23/2025
Just a reminder: Our office will be closed Memorial Day (Monday, May 26th, 2025). If you are in need of branding supplies, patient prescriptions or pet food, please stop in today to grab those!
05/16/2025
With graduations happening in the region this weekend, we want to take the time to wish all the new graduates the best of luck with your future endeavors! Congratulations Class of 2025!
05/12/2025
**GRASS TETANY**
The last few weeks have provided some moisture in our area, hopefully leading to lush grass for summer turn out. Now is a great time to be assessing your mineral content (need to have adequate magnesium). We don’t want you to turn out and have to deal with grass tetany! The article below provides great details on what causes grass tetany.
Grass tetany can be a costly concern when transitioning cows to lush, cool-season pastures, but it can be prevented with proper magnesium (Mg) supplementation. Preparing for turnout by monitoring high-Mg mineral intake will help maintain adequate Mg status and prevent deficiencies.The secondary magn...
04/26/2025
Today we celebrate the incredible dedication of veterinarians around the world who work tirelessly to care for animals and protect public health. Whether it’s healing our pets, supporting farmers, or preserving wildlife, vets are true heroes in every sense.
Thank you for all you do!
04/19/2025
We would like to wish every one a Happy Easter tomorrow! Make sure to keep you pets safe with all the extra candy around 🍫🍬!
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Dr. Jim Wolf, DVM
Dr. Wolf joined Oahe Veterinary Clinic in 1990, after graduating from Kansas State University Veterinary School. He grew up in Lenora, KS. Dr. Wolf studied his undergraduate at KSU where is earned a degree in Animal Science and Industry. In 1991, Dr. Wolf became a partner in Oahe Vet. Dr. Jim and his wife Renee have two kids: Christa and Jamie. In his free time, Dr. Jim likes to hunt, fish and continue to watch the kids rodeo.
Dr. Jeff Ehrenfried, DVM
Dr. Ehrenfried started with Oahe Vet in 1992, after graduating from Kansas State University Veterinary School. He grew up in Norfolk, NE and attended University of Nebraska Lincoln where he obtained his B.S. in Animal Science and minored in chemistry and biology. After 2 years of being an associate with the clinic, Dr. Ehrenfried became a partner in 1994. He and his wife Karlee have three kids: Garrett, Maranda and Becca. Dr. Jeff enjoys hunting, fishing, golf, sports and playing the guitar.
Dr. Heather Osnes, DVM
Dr. Osnes joined Oahe Veterinary Clinic in June of 2010, after graduating from Iowa State University. She is originally from Kennebec, SD where she graduated from Lyman High School before attending South Dakota State University and obtaining her B.S. in animal science. Dr. Heather enjoys doing small animal, equine and cattle work. She and her husband Drew are kept very busy with their two sons, Charlie and Beckett.
Dr. Amanda Speckels, DVM
Dr. Speckels joined our team in June 2019. She grew up near Chamberlain, SD. Dr. Amanda went to the Univeristy of SD where she earned her Bachelor’s in Biology. From there, she went on the obtain her DVM at Iowa State University College of Veterinary Medicine. During Dr. Speckels last year of vet school, she did a variety of preceptorships for both large and small animals throughout the Midwest. I enjoy small animal and food animal surgery as well as large animal reproduction. During the summer time, Dr. Amanda enjoys being out on the water and during the winter her fiancé, Matt, and her enjoy skiing out west. She has nieces and nephews that she enjoys spending time with as often as she can.
Sarah Sass, LVT
Sarah came to Oahe Vet in 2003 after graduating with her veterinary technician degree from NCTA in Curtis, NE. Sarah is originally from Mitchell, SD. Sarah helps with all aspects and daily routines in the clinic. One of her favorite duties as a technician is educating clients on different topics of pet health care. She and her husband Jason live in Blunt with their daughter Stazy Jo. She enjoys throwing darts, camping, and reading.
Elizabeth Medcalf, LVT
Liz graduated from National American University in 2011, and after doing her externship with Oahe Vet, she stayed on as a full time technician. She is originally from Pierre, SD. Liz helps with both small and large animal duties. Her favorite technician jobs include helping with small animal surgeries and equine patients. She lives in Fort Pierre with her husband, Josh, and two kids, Maizee and Tilden. Liz likes to ride horse, spend time at the beach in the summer and hang out with friends.
Sheyna Huddle Sheyna graduated from NCTA in Curtis, Nebraska with and Agriculture Productions Degree and Veterinary Technology Degree in 2013. Sheyna is originally from Neola, IA. She joined our crew at Oahe Vet in 2016. Sheyna helps both with small and large animals, but most of the time can be found working cattle. When she’s not working, Sheyna enjoys cooking, spending time with family and friends, hunting/fishing, and drawing.
Kristina Breuker, LVT
Kristina joined our team in April of 2020. She has many years of experience as a clinical technician and with research. She worked with Newport Labs in Minnesota before coming to South Dakota. Kristina can be found helping with all aspects of tech work from large to small animals. In her free