Synopsis

The Siamese Fighting Fish is notorious for its aggression, readily engaging in battles even with its own reflection until utterly spent. New research suggests this combative nature isn't uniform; it varies considerably depending on the individual fish’s temperament. Historically, male kangaroos were once matched against human opponents in boxing rings – the most formidable of these animals are powerfully muscled, possessing a kick capable of inflicting fatal injury. What drives these conflicts a