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

At Cross Timbers Animal Medical Center we believe in providing up-to-date medical care with compassion to pets and their people... because pets are family, too!

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


Beth joined our practice in October of 2017.  She is one of our amazing receptionists.  Beth has over 2 years of experience in the veterinary field as a receptionist and a technician.  She enjoys sports, rock climbing, and cooking.  Beth has a 7 year old boxer mix that she adores! Beth is currently attending classes online at Brigham Young University and is studying Business Management.
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Bringham Young University

Sports, Rock Climbing, and Cooking

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

Al Arca, DVM

Dr. Al Arca has been with Cross Timbers Animal Medical Center since 2016 as a relief veterinarian.  He graduated with his Doctorate in Veterinary Medicine in 1988 from Texas A&M University.  Dr. Arca has been working as a relief veterinarian in the DFW area for over 14 years!  We are proud to have him with us on most Tuesdays throughout the year and on some Saturdays as his schedule allows.

Dr. Arca is married to Dr. Sandra Arca, a pediatrician with Cook's Children Network.  They have three amazing daughters who are following in their parents' footsteps attending school at Texas A&M University.  The Arca Family includes 2 dogs and 2 cats.  When Dr. Arca is not taking care of his patients, he enjoys jogging, genealogy, reading and keeping up with his kids and furry friends.
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Texas A&M University

Jogging, genealogy, and reading