How can you tell when a Tasmanian devil is angry?

The Tasmanian devil does not get "angry". By instinct, it is territorial, and will fight noisily with other Tasmanian devils for food and territory. When a Tasmanian devil shows aggression because it is defending its territory, it does so by any of the following means:

• Its ears turn red.
• It makes blood-curdling screams and howling noises.
• It bites others of its species, and it has particularly sharp teeth and very strong jaws.
• When threatened (but not so much when being aggressive), it can release a powerful and repulsive scent.