Barking at the Knot

Understanding the hidden history of animal services

The Arsenic Club: Blackmail and Horse Poisoners, Part 1

A gang of horse poisoners going by the name The Arsenic Club set a reign of terror on the east side of Manhattan in 1909, killing more than 500 horses in just three months.

Audrey Lodato

January 19, 2026

1900s, 1910s, Animal Welfare

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