The Yishun cat killings: a serial cat-abuse pattern, unsolved

Beginning around September 2015, a wave of cat killings and abuse spread across Yishun (and parts of Sembawang). By late December 2015, at least 17 cats had died and two were severely injured; by mid-2016 around 35 cats had been found abused or dead. The methods varied widely — cats thrown from heights, others found with head and back trauma, internal injuries, gouged eyes and severed limbs — leading investigators and the Cat Welfare Society to suspect more than one perpetrator. Grassroots "fast response" patrols were formed and Nee Soon MP Louis Ng pressed authorities for action. Only four to five cases matched the throw-from-height method of the single man later prosecuted (Lee Wai Leong); the remaining cases were never solved, and the broader series produced no further prosecutions.