Anger Across Species: Humans, Animals, Insects, and Plant Defense Analogues

Humans

Fundamental emotion tied to survival instincts. Expressed via verbal outbursts, aggression, facial expressions (scowling).

Animals

Observed in mammals, birds, reptiles. Primates: teeth displays, chest-beating, vocalizations. Dogs/cats: growling, hissing, baring teeth.

Insects

Anger-like behaviors: ants aggressive when nest disturbed; honeybees sting when threatened.

Plants

No emotions, but evolved defenses (toxins, deterrents) against predators—analogous to anger responses.

Anger's expression varies by biology, evolution, and environment.