#TRIGGER {({Leopard|Rex|Chicken|Antelope|Impala|Bat|Pangolin|Kite|Wallaby|Eagle|Vulture|Warthog|Gecko|Goat|Armadillo|Turtle|Mongoose|Scorpion|Junglefowl|Swan|Kite|Ferret|Fox|Spider|Toad|Crocodile|Badger|Rat|Falcon|Pigeon}) {flies in.|has arrived.}} {
  #IF (%1 != @Pet) {
    sho %1
    gtell Multiple pets detected. Killing off old pet. Please sense my pet @Pet to find me. Sorry for the spam.
    }
  }


it will be changed to

#TRIGGER {({Leopard|Rex|Chicken|Antelope|Impala|Bat|Pangolin|Kite|Wallaby|Eagle|Vulture|Warthog|Gecko|Goat|Armadillo|Turtle|Mongoose|Scorpion|Junglefowl|Swan|Kite|Ferret|Fox|Spider|Toad|Crocodile|Badger|Rat|Falcon|Pigeon}) {flies in.|has arrived.}} {
  #IF ((%1 != @Pet) OR (%1 != @ArmageddonPet)) {
    sho %1
    gtell Multiple pets detected. Killing off old pet. Please sense my pet @Pet to find me. Sorry for the spam.
    }
  }