Treeline Veterinary Cancer Care

Treeline Veterinary Cancer Care Dr. Karen Oberthaler is a board certified Veterinary Oncologist with decades of experience.

09/05/2026

It’s official!! Treeline Vail! 🌲🏔️💚

Our pop-up has become permanent!

In just a couple of weeks, we’ll begin welcoming patients to our new, dedicated veterinary oncology space in Vail. A home of our own, specifically for our cancer patients and their families.

With expanded days and availability, we’re so excited to bring more of the personalized, one-on-one cancer care that defines Treeline Vet to the pets of Western Colorado, the mountain communities, and our ski towns.

Same Treeline. Same expert specialized care. Now greater availability in the mountain towns.
We can’t wait to welcome you!

💚🐾

08/12/2026

We are all about the snackies! 🫘

08/10/2026

t’s that time of year again — the Boulder County Fair! 🐷🐹🐴💙

Every year, we love getting involved and supporting the next generation of animal lovers. Whether they’re learning proper husbandry and handling, caring for their animals, or creating an educational display, it’s so inspiring to see young people putting in the work and developing a lifelong love and respect for animals.

It’s always an honor to volunteer, and this year Dr. Oberthaler (from Treeline Veterinary Cancer Care ) and Dr. Wunder (Longmont Small Animal Hospital) helped with infectious disease screening — from the littlest guinea pigs and to the big guys! 🐽

It certainly makes for interesting days, and one we look forward to every year.

Until next year, Boulder County Fair! 💙🐾

Boulder County Fair

07/11/2026

We get asked all the time “How do you do it?”
Loving your pets is how.
Working with only animals that have life-threatening diseases is not easy. But those animals - and the trust you’ve placed in us - make the hard times worth it.
So if we are running behind, and let’s be honest, it happens, it may be because we needed a moment! 🥹

Address

659 S Broadway
Boulder, CO
80305

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm

Telephone

+17204328680

Website

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