Robert M. Wallace

Pet DRx Corp. provides primary and special veterinary care services for companion animals through a network of veterinary hospitals. It owns and operates approximately twenty-three veterinary hospitals located in northern and southern California. The hospitals offer a full range of general medical treatment for companion animals, including preventative care, such as vaccinations, examinations, spaying/neutering, and dental care, and a broad range of specialized diagnostic and medical services, such as x-ray, ultra-sound, internal medicine, surgery, cardiology, ophthalmology, dermatology, oncology, neurology and other services. The hospitals also sell pharmaceutical products, pet food and pet supplies. Pet DRx Corp. is headquartered in Brentwood, TN.

Echo Healthcare Acquisition Corp. is a blank check company that was formed on June 10, 2005 to serve as a vehicle for the acquisition of one or more domestic or international assets or operating businesses in the healthcare industry. The Company has neither engaged in any operations nor generated any revenues to date. The Company’s entire activity since inception has been to prepare for its proposed fundraising through an offering of its equity securities.

XLNT Veterinary Care, Inc. provides veterinary primary care services. It offers its services to pet animals through a network of fully owned veterinary hospitals. The company was founded in 2004 by Robert Wallace and is headquartered in San Jose, CA.

Part of Mars, Inc., Pets' Rx, Inc. is a company that owns veterinary hospitals. The company is based in Westlake Village, CA. Pets' Rx was acquired by Veterinary Centers of America, Inc. on June 20, 1996 for $14.40 million.