Defense

The wall was built and rebuilt over centuries, and the Ming stretches are the best preserved.

They mix chemicals in a chamber and shoot the near-boiling spray at attackers.

Tetrodotoxin makes them dangerous to eat unless prepared by trained chefs.

Contrary to myth they cannot shoot them, but the quills detach easily on contact.

Their oily spray is a defense that can linger for days.

Ankylosaurus, the armoured dinosaur, ended its 8-metre body with a massive bony tail club weighing up to 50 kg. Biomechanical modelling shows it could swing this weapon at velocities capable of shattering bone, easily snapping the ankle bones of an attacking T. rex. The club formed from fused vertebrae and skin ossifications. Nodosaurs, closely related ankylosaurs, lacked tail clubs but had long shoulder spikes instead.

The People's Liberation Army (PLA) boasts approximately 2 million active personnel, making it the largest military force by active duty members globally. This immense force underscores China's significant role in global geopolitics and national defense strategies.

Established in 1967, the North Atlantic Treaty Organization's main political and administrative center is situated in Haren, a northern municipality of Brussels. This strategic location underscores Belgium's role in international defense and security.

Andorra maintains no standing army, relying on Spain and France for its defense under a unique agreement. Its small police force handles domestic security, a testament to its long-standing neutrality and peaceful international relations since the 13th century.

Their bodies contain specialized electric organs made of thousands of electrocytes, which are modified muscle cells. These cells work like tiny batteries, discharging simultaneously to create a powerful jolt for stunning prey or self-defense against predators.