A Word from Our Vets

Read the stories of the vets who staff our clinic and oversee daily care of our animals.


Denise Dietsch, DVM 
Director of Veterinary Services

I’m a grad of the University of Missouri Veterinary College (Class of ’76) and a native St. Louisan who’s proud to have grown up on the South Side.

My first experience out of vet school was working in a private practice owned by one of the St. Louis Zoo veterinarians. Though I didn’t work at the zoo, his expertise with “exotics” attracted an unusual variety of animal clients. While I treated mostly cats and dogs, my daily routine during those seven years often included mountain lions, monkeys, birds and reptiles.

From there, I was on staff at another local private veterinary hospital. About 8 years ago I joined the staff of the APA Adoption Center. Here I am in charge of our outpatient clinic that is open to the public. I also oversee the healthcare of the dogs and cats that are housed in our shelter.

Outside the APA Adoption Center, I’m the mother of one lovely daughter, Alexandra, and 3 dogs and 2 cats. My free time is spent on remodeling and decorating my house or crafting miniatures. (Ask me about the guitars I’ve built!)


Jennifer Marquardt, DVM

I grew up across the river in Edwardsville, Illinois. From a young age I always wanted to be a veterinarian so I was thrilled to be accepted to the University of Illinois College of Veterinary Medicine class of 2002.

After graduation, I moved to Chicago and worked in private practice until I moved back to the St. Louis area in 2007. I joined the APA team in the fall of 2017 after 15 years in private practice. I work in the wellness clinic and help with the treatment and care of the shelter animals.

When not at the APA, I enjoy spending time with my husband, 2 daughters, 2 dogs and 2 cats. We like traveling, frequent visits to the zoo, gardening and spending time outside with the dogs.
I also love spending time at a local craft studio making metal creations (jewelry and sculpture).

The Services We Provide

Explore the care we offer through our APA Adoption Center clinic

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Help Find Lost Pets

Did you know 90% of lost, stray and unwanted St. Louis pets end up at one of our three agencies? Search our database or report a missing pet.

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Stay Informed with Dr. D

Get an overview of common health issues for dogs and cats from our clinic director.

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