What it Means AAHA is a respected organization within the veterinary industry with a mission to accredit veterinary practices who demonstrate a simple standard: excellence in everything they do. In order to certify this, AAHA inspectors evaluate a veterinary practice on approximately 900 criteria of running a truly exceptional hospital. Fewer than 15% of veterinary practices in the United States earn and keep AAHA accreditation. We do it because your pet is family. And when it comes to family, no less than the best will do.