JACOBSON, May S. Of Sudbury, Massachusetts, scientist, educator, and celebrated figure in the Doberman Pinscher world, passed away peacefully, leaving a legacy of extraordinary achievement in both biomedical research and purebred dogs.
The daughter of Polish immigrants, May grew up on the shores of Lake Winnipesaukee, where she developed a lifelong love of nature and community. She earned her B.S. in Science from Simmons College in 1958, her master’s in Biochemistry and Molecular Biology from MIT, and her Ph.D. in Biochemistry from Brandeis University. Her research career spanned more than 50 years, beginning in Hematology at Boston Children’s Hospital and culminating as a Research Associate in Orthopedics at both Boston Children’s and Harvard Medical School. A prolific author, her influential work on platelet-rich plasma, regenerative medicine, and blood-derived therapies shaped clinical practice for decades.
At MIT, she met Arnold Jacobson, her husband of 59 years, who preceded her in death in October 2019. Together they shared a deep passion for Doberman Pinschers. Under the “Chalmar” kennel name, Dr. Jacobson bred or owned the sire of more than 30 American Champions, including multiple all-breed Best in Show winners. A dedicated Schutzhund competitor, she bred the second Doberman in history to earn both an American Championship and a Schutzhund 3 title, the only one ever owner-handled.
As an AKC judge licensed for the Working Group, she evaluated Dobermans across six continents. She was elected four times by the Doberman Pinscher Club of America membership to judge the National Specialty and received the DPCA Lifetime Achievement Award. Her club service included the DPCA Board of Directors, President of the Pilgrim Doberman Pinscher Club, President of an all-breed club, and founding board member of the United Doberman Club. Dr. Jacobson’s brilliance was matched by her generosity.
She is deeply missed by all who knew her. She is survived by her brother, Dr. Phillip Smith, her children Ellen and Dr. Larry Jacobson, and grandchildren Rhaya, Charlie, Andrew, and Benjamin. For service and donation information, please visit www.StanetskyBrookline.com
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Published by Boston Globe from Apr. 18 to Apr. 19, 2026.