In Ridgefield (maybe a drive) There is Cliff Hedinger he is on Main Street in downtown ridgefield. I have been going to him since I was 5.
When I move to white plains, NY I will still take my dogs to him. I adore him.
At 14 I took hamsters to him and he made it cost effective and has always been there no matter what I bring through the door.
I do know of one in Fairfield but would have to ask my friend who takes all her animals there (3 cats, 3 dogs) and they have great discounts for rescues and multiple animals but I will look that up for you.