John Brennan

What a wonderful man and Western Avenue neighbor. Fond memories of your wonderful care to our dachshunds over the years. Mary and Jack often attended Kiwanis functions at the Bavarian Chalet. Actually, I thought of you just the other day! May you both RIP.

I am so sorry for your loss. Your dad ,Dr.Jim, and Dr Castler hired me to be a kennel boy for my second job when I was in middle school. I would ride my bike ,hitch hike or walk to get to work.Many times one of the Doctors would give me rides home if it was dark ,snowing or rain.I absolutely loved being involved with all the duties they involved me in . I learned so much and developed such a passion for learning about all animals and How to treat people .They made me feel valued...

Pete & Family, Very sorry to hear of your Dad's passing. He was a special individual and a good man. I enjoyed the many conversations I had with him over the years. Many good memories of the get togethers with the Furdons, Kryzaks and Childs. Our thoughts and prayers are with you all. Todd & Peg Gifford

Peter, John and Mary Ann. I have many fond memories of GAH. My mother decorating for all the holidays, adopting Amy's cats, and going on calls with Jack and Jimmie. Miss everyone. Hugs, Cookie. AKA Mary Breitenstein

My deepest sympathies to the Brennan family. What a wonderful man and leader. Although I didn´t follow the veterinarian path, it was Dr. Brennan´s mentorship and support that inspired me to pursue a rewarding career helping other veterinarians in the animal health industry. All the while, enjoying the amazing blessings of the human-animal bond. Eric Lane.

Jack will be missed by many of us. He was always kind and considerate. He was a great supporter of the Guilderland Public Library.

Wonderful, kind man. Great person to work for as a kennel assistant.

I´m so sorry for your loss. I loved Dr Brennan very much. He was my vet since 1959. I always tell the story of Doc telling me to give my horse black coffee and whiskey. My horse was shivering. It worked. He was the best along with Dr Jim. Now he´s with the love of his life, his beautiful wife Mary.