Meet our Doctors

Brenna Hanratty, DVM

Rotating Veterinarian

I’m originally from the east end of Long Island, New York. I’ve been interested in animals since I was a child, from catching frogs in the backyard to begging my parents to let me volunteer at the local animal shelter. Throughout high school and college I became involved in dog sports and training service dogs, which further peaked my interest in working with animals. I attended the University of Delaware for my undergraduate degree, where I decided veterinary medicine was truly my calling. I drove cross-country with my two large dogs to attend veterinary school in Arizona at Midwestern University. While I did enjoy my time in Arizona, I am ready to be back on the east coast! 

In my free time, I enjoy training and competing with my dogs in sports, trying new restaurants and wineries, and baking cookies. I currently have two dogs: Bentley, a ten-year-old Leonberger, and Kovu, a seven-year-old Labrador/Golden Retriever cross who’s a failed service dog from Canine Companions for Independence

Clinical Areas of Interest

  • Medical oncology
  • Internal medicine
  • Breed-specific diseases
  • Reproductive medicine

Why Do You Work at Friendship?

I am very excited to match with Friendship and have the honor to work here as a rotating doctor! I was drawn to Friendship’s positive work culture and emphasis on continued learning experience. I look forward to exploring DC as I return to the east coast!


  • BS, University of Delaware. Major: Pre-Veterinary Medicine and Animal Biosciences; Honors Degree 
  • DVM, Midwestern University College of Veterinary Medicine

Publications and Research

  • Effects of diet on immune function and inflammatory phenotypes in dogs. Prospective, randomized, cross-over study
    Role: co-investigator
    Midwestern University, Glendale, AZ 

    • Primary investigators: Jared Jaffey DVM, MS, DACVIM (SAIM), Dan Su DVM, DACVN 
    • Industry sponsored study: Just Food For Dogs 
    • Contributed to study design, recruitment, sample acquisition, data organization and analysis. Will contribute to writing of the manuscript and be a co-author when submitted to the Journal of Veterinary Internal Medicine in June 2021. 
  • Hanratty BM, Hitchener GR. An unusual presentation of Salmonellosis in a group of Khaki Campbell ducklings (Anas platyrhynchos domesticus). Poster presented at: American College of Veterinary Pathologists 2016 Annual Meeting. 2016 Dec 3-7; New Orleans, LA. 
  • Hanratty BM, Charytonowicz D, Schmidt CJ. Modeling the time course of a heat stress response. Poster presented at: University of Delaware Summer Scholars Poster Session. 2015 August 14; Newark, DE.

Friendship provides state of the art, comprehensive services for our clients and patients. But, more than that, we provide a caring team who understand the unique human-animal bond. View Our Services

COVID-19 Update: Friendship is currently open. Due to ongoing concern revolving around COVID-19, we have implemented additional guidelines and protocols to ensure we can continue caring for your pets. Visit for the latest update.