Cross Timbers Animal Medical Center

Is this your veterinarian?

2601 Cross Timbers Road, 2601 Cross Timbers Road
Flower Mound, TX 75028

Driving Directions

(972) 874-8387


  • Hours:
  • Mon-Fri: 7:00AM-7:00PM
  • Sat: 8:00AM- 1:00PM
  • Sun: Closed
  • After Hours Emergency? Call 469-464-2964

We regard dogs, cats and all pets as true family members; we believe they should receive the very best in health care, both preventive and curative. Our duty, and our pleasure, is to provide top quality patient care, through thoughtful client education and health maintenance, to ensure our patients live as long and healthy a life as is humanely possible.

We are passionately dedicated to achieving excellence in this goal for each and every animal companion entrusted to our care. We make these promises as if your pet were our own because we understand the special bond that you share. In addition to treating each special patient with the highest level of medical standards and compassion, Cross Timbers Animal Medical Center has an in-house pharmacy, extensive on-site laboratory, radiology, and surgical facilities, allowing our clients to make one stop for their pet's medical care.

Appointments are preferred during normal business hours, but our doors are always open to walk-in appointments that are seen on a first come, first served basis. We're always available for emergency and critical patients during our normal operating hours.

We look forward to meeting you and your beloved animal companion, and enjoying many happy, healthy years with you in our family! ~ Your Friendly Cross Timbers Animal Medical Center Pet Care Team

Our Mission
We will provide professional, compassionate and personalized veterinary care with the best interest of your pet as our primary focus. To attain this goal, we will use all possible resources to diagnose and treat; we will educate you about caring for your healthy pet and will work with you to make decisions about treating your ill pet; we will employ the benefit of our team approach for additional analysis and advice. We will venture to earn your loyalty, trust, respect and friendship, and hope to build a long-term partnership by maintaining the highest standards of veterinary care through all stages of your animal companion’s life.

We make these promises as if your pet were our own because we understand the special bond that you share.

Cross Timbers Animal Medical Center Services

  • Bathing
  • Behavioral Medicine
  • Boarding
  • Dental Care
  • Early Spay and Neuter
  • Emergency and Critical Care
  • Hospice and Euthanasia Services
  • Laser
  • Microchipping
  • Nutritional Counseling
  • Pain Management
  • Parasite Prevention and Control
  • Puppy and Kitten Care
  • Radiology (X-Rays)
  • Senior Care
  • Surgery
  • Vaccinations
  • Wellness Exams

Cross Timbers Animal Medical Center Staff Profiles

Dena Hartley-Lock, D.V.M.

Associate DVM

Dr. Lock was born in Minnesota, and while growing up, lived in Michigan, Wisconsin, Nevada, Texas and Tennessee.  She received her degree from the University of Tennessee in 2002.  This is where her love of college football and most importantly, the Tennessee Volunteers began.

Another love became apparent at the University of Tennessee. Feline Medicine.  After graduation, she worked for 2 years with a nationally recognized feline practitioner in San Antonio, Texas, prior to joining Cross Timbers AMC in 2005.  She truly enjoys that this has allowed the diversity of getting to work with dogs, in addition to being able to continue her passionate care for cats.  She is working toward becoming ABVP (American Board of Veterinary Practitioners) certified in feline medicine in the future.  She is a USDA accredited  veterinarian and has experience in and enjoys the challenges of helping clients who are traveling or moving overseas with their pets.

Travel is another love of Dr.Lock's.  Her husband, Bevin is from the beautiful country of New Zealand and they try to get home to visit their family as often as possible.  Dr. Lock is blessed that they have her immediate family here locally.  She and her husband, along with their dog Peyton (yes, after Peyton Manning) and their many beloved felines enjoy living in the Highland Village community. She enjoys working with patients, clients and the staff, all of whom she considers her extended family at Cross Timbers AMC.

  • Member, American Association of Feline Practitioners
  • Member, American Veterinary Medical Association
  • Member, Texas Veterinary Medical Association
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University of Tennessee


Technician Manager

Heather joined Cross Timber Animal Medical Center in 2006 and is our expert Veterinary Technician Manager. Heather has been in the Veterinary field for over 14 years and enjoys taking exceptional care of all the patients that are a part of the Cross Timbers family. She is currently going to school to become a Licensed Veterinary Technician.
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Cedar Valley

John R. Harvey , DVM

Practice Owner

Dr. Harvey was born in Metairie, Louisiana.  He received his degree from the University of Florida College of Veterinary Medicine in 1998.  Dr. Harvey began his veterinary career in the U.S. Army, serving as Chief Veterinarian at Redstone Arsenal in Huntsville, Alabama.  He then joined a small animal hospital in 2001, serving as Associate Veterinarian, in Lake Mary, Florida. 

Dr. Harvey and his wife, Christine, excitedly discovered beautiful Flower Mound after a long search.  They purchased Cross Timbers Animal Medical Center (formerly Aladdin Animal Hospital) to realize Dr. Harvey's dream of practice ownership.  Each and every day, the primary goal of Dr. Harvey and his staff at CT-AMC is to provide the most personalized and highest quality health care to each pet in our animal hospital family!

In addition to the practice, Flower Mound is exactly the community that the Harveys were seeking to put down strong family roots for years to come.  Dr. Harvey and Christine have three children.  There have been many pet family members through the years; including, beloved Rogue and Smokey, the couple’s college cats; sweet Casey Dog, a black and tan coonhound adopted from Redstone in Alabama; and many rescue animals that completed the family.

Currently, the family is blessed with lots of unconditional love from O'hana, a sweet and beautiful mixed breed dog from Coppell Humane Society, and Daphne, an amazing Pyrenees dog and true companion to O'hana and the Harvey family, from SPIN (Saving Pyrs in Need).

When not taking care of our furry friends at Cross Timbers AMC, Dr. Harvey enjoys spending time with his family, golfing, hiking, reading and college football (Go Gators!).  Dr. Harvey is also active in the community in the following ways:
  • On Board of Directors, Flower Mound Animal Control
  • On Board of Directors, Flower Mound Emergency Pet Hospital
  • Member, American Veterinary Medical Association
  • Member, Texas Veterinary Medical Association
  • Den Leader for his son's Cub Scout Pack
  • Committee Chairman for the Cub Scout Pack
  • Active Member of  the WATCH D.O.G.S Program at Heritage Elementary and McAuliffe Elementary where his children attend school
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University of Florida