Dr. Mark has helped with our family of cats (usually around 5 at a time) for almost 2 decades. I can't say enough good about him. He can tell more with his 2 fingers in diagnosis, probing the cat's body, than any other animal doctor I've ever encountered and all their imaging and x-rays and multitude of tests. And Michelle knows her stuff too. I really don't care what any other reviewer says. I personally am thankful that Yale Animal Clinic has helped us so much in the Heights area. I no longer live in the area, but I keep coming back, because they're the best.