Rocky Mountain Animal Hospital

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Rocky Mountain Animal Hospital Providing top tier veterinary care to the state of Wyoming. Staffed and open 24/7

🏆 WYOMING’S BEST VETERINARIAN — ONCE AGAIN! 🏆We are incredibly proud to announce that Dr. Ashleigh Evans has once again ...
10/02/2026

🏆 WYOMING’S BEST VETERINARIAN — ONCE AGAIN! 🏆

We are incredibly proud to announce that Dr. Ashleigh Evans has once again been voted Best Veterinarian in Wyoming in the Casper Star-Tribune’s 2026 Best of Wyoming Readers’ Choice Awards! 🎉🐾

As the Medical Director and Owner of Rocky Mountain Animal Hospital, Dr. Evans has dedicated herself to providing exceptional veterinary medicine, compassionate patient care, and unwavering support for the animals and families of our communities.

This recognition is a testament to the countless hours, hard work, and passion she pours into her profession. Whether she’s treating a routine appointment, managing a critical emergency, or leading our growing veterinary team, Dr. Evans consistently puts her patients first.

Winning this award once is an incredible honor. Being recognized again makes it even more special!

To everyone who took the time to vote, THANK YOU! Your continued trust and support mean the world to Dr. Evans and our entire team.

Please join us in congratulating Dr. Evans on this well-deserved recognition! 👏🐾

Rocky Mountain Animal Hospital
Locally Owned. Independently Operated. Dedicated to Exceptional Veterinary Care.

It is with heavy hearts that we share the passing of Gail Mahnke, a truly special member of the Casper community and the...
09/22/2026

It is with heavy hearts that we share the passing of Gail Mahnke, a truly special member of the Casper community and the Rocky Mountain Animal Hospital family.

Gail was an important part of the foundation that helped shape Rocky Mountain Animal Hospital into what it is today. Through her dedication, compassion, and genuine care for people and their pets, Gail touched countless lives and helped create the welcoming, caring environment that our hospital strives to provide every day.

For Dr. Evans, Gail was not only a colleague and mentor, but also a dear friend. She offered guidance, encouragement, wisdom, and support throughout the years. Her influence helped shape Dr. Evans both professionally and personally, and the lessons and memories they shared will continue to be carried forward.

Gail was one of those rare people whose impact cannot be measured simply by the work she did. The compassion she showed, the relationships she built, and the example she set have become part of our hospital's story.

Although we are deeply saddened by her passing, we are incredibly grateful for the time we were fortunate enough to have with her. We will remember her not only for all that she gave to Rocky Mountain Animal Hospital, but for the person she was—a mentor, a friend, a trusted member of our team, and someone who wanted to help every animal she met.

Gail's legacy will continue to live on at Rocky Mountain Animal Hospital, in the clients and families she served, in the animals she helped care for, and in the people she inspired.

She will be deeply missed and forever remembered as an important part of who we are.

With gratitude and love,

Dr. Evans and the entire team
Rocky Mountain Animal Hospital

Something exciting is on the horizon for Rocky Mountain Animal Hospital and Wyoming horse owners… 👀We’re growing—and wor...
08/28/2026

Something exciting is on the horizon for Rocky Mountain Animal Hospital and Wyoming horse owners… 👀

We’re growing—and working behind the scenes on something special for the equine community.

Coming in 2027: PLATTE VALLEY EQUINE HOSPITAL

We’re not quite ready to share all the details just yet, but we can’t wait to bring this vision to life!

Stay tuned… something big is coming. 🐴

So grateful for all the support and trust from our community! These awards would have not been possible without our clie...
08/24/2026

So grateful for all the support and trust from our community! These awards would have not been possible without our clients, patients and amazing team!

Congrats to Rocky Mountain Animal Hospital for being voted by readers as Oil City's BEST Veterinary Clinic and one of the best company cultures! 🏆

1st, 2nd, and 3rd place winners: If you missed us at David Street, our next red carpet pickup event will be hosted by the Boys and Girls Clubs of Central Wyoming at the Ford Wyoming Center on September 16th during their annual breakfast. Reserve a free table for your business at https://bgccw.org/casper-breakfast-2026

Bring your dirty pups to our dog wash today!
08/16/2026

Bring your dirty pups to our dog wash today!

Welcome to the RMAH Team, Dr. Alexa Trees! 🐾We are incredibly excited to welcome Dr. Alexa Trees to the Rocky Mountain A...
08/14/2026

Welcome to the RMAH Team, Dr. Alexa Trees! 🐾

We are incredibly excited to welcome Dr. Alexa Trees to the Rocky Mountain Animal Hospital family! 🎉

Dr. Trees is the FOURTH veterinarian we have added to our team this year, and we couldn't be more excited about what this continued growth means for our patients and our community.

As Rocky Mountain Animal Hospital continues to grow, our goal remains the same: to provide exceptional veterinary medicine, compassionate care, and a team that is here when you need us.

Adding another talented veterinarian allows us to continue expanding our availability, strengthening our team, and serving even more families throughout Casper and Central Wyoming. ❤️

Please join us in giving Dr. Alexa Trees a huge RMAH welcome! We are thrilled to have you on the team, Dr. Trees! 👏🐶🐱

Welcome to Rocky Mountain Animal Hospital, Dr. Trees! We’re so glad you’re here! 🩺🏔️



BIO:

Dr. Trees, a born and raised Wyomingite, is happy to be back in her home state after receiving her Doctorate of Veterinary Medicine from Lincoln Memorial University. Her love for all animals big and small started at a young age with her family’s personal pets in Cheyenne, WY and horses at her grandparent’s house in Kinnear, WY. She jumped into showing rabbits with Laramie County 4-H at a young age, and helped neighbors and friends with their horses, pigs, cattle, goats, sheep, chickens, alpacas, and more any chance she got. While she always knew she wanted to be a veterinarian, that passion grew when her local veterinary clinic actively involved her in treating a complicated situation with her rabbit. As she grew older she attended the University of Wyoming (Go Pokes!) and received her Bachelor’s degree in Animal Science.

While at the University of Wyoming she discovered a passion for shelter medicine after working closely with and fostering for Laramie Animal Welfare Society. Dr. Trees has experience in both shelter medicine as well as general practice settings. Her professional interests include soft tissue surgery, integrative medicine, shelter medicine, behavioral medicine, and end of life care. She strives to make meaningful connections with pets and their owners while helping the Wyoming community around her thrive.

When not working, Dr. Trees finds herself soaking up time with family and friends, volunteering with Christian Veterinary Missions, and loving on her Pitbull mix Amren and very opinionated old lady kitty Kiara. Dr. Trees is a book fiend (when you see her please feel free to give her your book recommendations). She also finds joy in all things outdoors whether it be gardening, hiking, or fishing as well as crafting and working on many home DIY projects since finding her home in Casper.

As the summer months come to an end, the heat is still blazing! The Rocky Mountain Animal Hospital family has came up wi...
08/10/2026

As the summer months come to an end, the heat is still blazing! The Rocky Mountain Animal Hospital family has came up with something to keep your fury friends cool and a whole lot cleaner! 🫧😉

Pet of the week! Meet Rocky, a fourteen week old Airedale puppy weighing in at almost 19lbs! This strong and loving soul...
08/07/2026

Pet of the week! Meet Rocky, a fourteen week old Airedale puppy weighing in at almost 19lbs! This strong and loving soul has an amazing family that has kept up on keeping him updated on vaccines and wellness exams. Rocky has won the hearts of many by being such a model and having the most outstanding personality!💙🐾

Due to already filling up with over 70 cats we are adding an additional discounted neuter day for another 50 cats on Aug...
08/05/2026

Due to already filling up with over 70 cats we are adding an additional discounted neuter day for another 50 cats on August 20th!

🐾 AUGUST CAT SURGERY SPECIALS ARE HERE! 🐾

At Rocky Mountain Animal Hospital, we're making it more affordable to provide your cat with the care they deserve.

🐱 August 19th – Cat Neuters
💙 Only $50

🐱 August 26th – Cat Spays
💙 Only $150

As part of this special:
✅ Our wellness exam fee will be waived for pets scheduled for surgery.
Additional services (such as vaccinations, bloodwork or treatment for medical conditions) are available but will be charged separately if needed.

⚠️ Appointments are limited and these special pricing days fill quickly each year. We encourage you to reserve your spot as soon as possible.

Spaying and neutering helps prevent unwanted litters while providing important long-term health and behavioral benefits for your cat.

📞 Call Rocky Mountain Animal Hospital today to schedule your appointment!
307-472-5105

Offer valid only on the designated surgery dates while appointment availability lasts.

🐾 AUGUST CAT SURGERY SPECIALS ARE HERE! 🐾At Rocky Mountain Animal Hospital, we're making it more affordable to provide y...
08/03/2026

🐾 AUGUST CAT SURGERY SPECIALS ARE HERE! 🐾

At Rocky Mountain Animal Hospital, we're making it more affordable to provide your cat with the care they deserve.

🐱 August 19th – Cat Neuters
💙 Only $50

🐱 August 26th – Cat Spays
💙 Only $150

As part of this special:
✅ Our wellness exam fee will be waived for pets scheduled for surgery.
Additional services (such as vaccinations, bloodwork or treatment for medical conditions) are available but will be charged separately if needed.

⚠️ Appointments are limited and these special pricing days fill quickly each year. We encourage you to reserve your spot as soon as possible.

Spaying and neutering helps prevent unwanted litters while providing important long-term health and behavioral benefits for your cat.

📞 Call Rocky Mountain Animal Hospital today to schedule your appointment!
307-472-5105

Offer valid only on the designated surgery dates while appointment availability lasts.

Address

1551 Centennial Court
Casper, WY
82609

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