Real-life ‘Very Hungry Caterpillar’ head-butts food rivals out the way
A species of caterpillar gets ‘hangry’ – a cross between hungry and angry – when food is scarce, a new study reveals. Monarch butterfly caterpillars (danaus plexippus) become aggressive fighters in their quest to eat milkweed – a herbaceous plant that’s toxic to most animals and their favourite food. US researchers found that monarch caterpillars … Read more