Evil-Detecting Dog/Playing With

Basic Trope: A pet detects a evil person.

• Straight: Rydia has a pet dragon, Torch, that growls when Baron Veli comes around.
• Exaggerated: Rydia has a pet dragon, Torch, that burns anyone to a crisp who has a hostile thought about its owner.
• Justified:
  • A dog was a stray and can recognize a person who was cruel to it.
  • The aforementioned Torch has the magical ability to see people's intentions.
  • Baron Veli has made a Deal with the Devil, and Torch can actually smell the influence of evil on him.
• Inverted:
  • Torch is both the Team Pet and the Token Evil Teammate. He loves evil people.
  • Big Bad Lyon has a pet hellbeast that can sense good.
• Subverted:
  • Torch growls at a goblin, but it turns out he's just racist against goblins. Rydia never noticed before, because she'd never met a good goblin.
  • Alternatively, Rydia's best friend has joined the Masquerade, and Torch treats him/her the same way.
• Double Subverted:
  • Torch was right; that goblin was evil.
  • Rydia's best friend was Good All Along.
• Parodied: When Lord and Lady Dark enter a zoo, every single animal there starts making more noise than a heavy metal concert.
• Deconstructed:
  • Animals can detect evil, but since everyone is evil it doesn't matter.
  • Alternately, despite being a good judge of character, the Team Pet is a True Neutral who espouses moral relativism and sees things in shades of grey
• Reconstructed: Even though this setting has Black and Grey Morality, the animals only respond to the worst of the worst.
• Zig Zagged: ???
• Averted: None of the animals in a work have a predefined reaction to people based on alignment, and individual animals all act differently.
• Enforced: "We need to show evil how Baron Veli is to the viewers. Have Rydia's dragon detect his evil."
• Lampshaded: "Why does Buster always seem to spot the bad guys before we do?"
• Invoked: "I'm not so sure about that Baron von Goodguy...somebody go get a dog."
• Defied: "Seriously, you don't trust me because your dog barked at me? Excuse me, I'm off to find a hero with a bit of brains."
• Discussed: "If this was a TV show we could find out who the spy for the Dark Lord is by seeing who Rover doesn't like."
• Conversed:"Have you ever noticed that animals are very good at spotting bad guys?"

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I don't like it here, it's making Rover nervous. Let's head back to Evil-Detecting Dog.