SERVICES VACCINE CLINICS APPOINTMENT INFO HOW TO HELP ABOUT US CONTACT US CAREERS OUR MISSION To provide accessible and affordable high-quality spay neuter services for companion animals and free roaming cats OUR VISION To eliminate euthanasia as a means of animal population control Providing high quality low cost surgeries Arizona s largest non-profit spay and neuter clinic OUR HISTORY Altered Tails was founded in 2003 with a mission of providing affordable and accessible spay and neuter services We began our journey by offering services through a mobile clinic that would travel to underserved communities in the metro Phoenix area where many residents had no means of transportation In 2007 local philanthropists Bea and Dick Barnhart donated the building at 950 W Hatcher Road honoring their love for Princess and their passion for spay and neuter Their generosity helped open our first stationary clinic and it was named the Altered Tails Barnhart Clinic in their honor The doors to the new clinic opened in 2009 and by 2012 Altered Tails had become the first and only Humane Alliance-certified clinic in Arizona with spay and neuter surgeries topping 8 000 annually In 2013 the Mesa clinic was opened to expand the reach of services and the two clinics performed more than 17 000 surgeries by the end of 2014 The W A G S Wheels for Animals Getting Spayed Neutered program was launched a year later designed to provide transport assistance for pet owners without the means of getting the animal to the clinic for surgery Today Altered Tails provides services for owned pets rescue organizations preparing their animals for adoption and groups practicing Trap Neuter Return with free-roaming cats We remain committed to offering high-quality services at an affordable price On average the cost to alter a pet at one of our clinics is about three times lower than that of full service veterinary clinics Since 2003 more than 225 000 dogs and cats have been sterilized by Altered Tails Dick Barnhart Melissa Williams Catherine Crandall Jeff Hollahan Dan Williams Brad Braun Esq Buff Ron Burns Crystal Castro-Giovanni Sybil Francis Michael Crow Janet Clive Cussler Rose Erato Roz Johnson Nils Amy Lofgren Bari Mears Alfredo Molina TOP Services and Pricing Location and Hours Altered Tails Barnhart Clinic – Nonprofit 501 c 3 EIN 02-0710228 2023 by Altered Tails Barnhart Clinic All rights reserved