Paleontologists in Argentina have uncovered a dinosaur unlike anything ever seen before. Alive some 140 million years ago, these majestic herbivores featured long, forward-pointing spikes running along their necks and backs. These spikes may have served a defensive role, but their exact purpose now presents a fascinating new mystery.
Tagged With animal defenses
When confronted by an enemy, Southeast Asian "exploding ants" do exactly what their name implies: they explode. Ignored for decades, researchers have completed a detailed survey of these enigmatic ants, discovering over a dozen species that fit into this group, including one that's completely new to science.
Prey animals are capable of defending themselves in an amazing variety of ways, but when it comes to mounting a sophisticated biological counter-attack, sea urchins have taken it to another level. When attacked by predatory fish, these humble echinoderms release a hostile cloud of tiny jaws that act independently of the urchin itself, attacking the fish and releasing the venom contained within them.