In March 2014, scientists recaptured P-22 and, after noticing crusting on his hair and skin, treated him for mange. Blood tests would later show that P-22 had two rodenticides in his system, one of which was diphacinone, a first-generation anticoagulant intended to kill rats. Gavin Newson’s desk, Assembly Bill 1322, bans the use of diphacinone, the first-generation anticoagulant most widely …
