Source: Magnet Tower
In the face of predators, some animals choose to escape, and some animals have evolved some special weapons - spiked weapons, for predators, being pricked by these sharp spikes is not a joke, for this animal with spiked weapons, the only thing the predator can do is to stay away.

<h1 class= "pgc-h-arrow-right" > spiked weapon for aquatic animals</h1>
Animals in the water also protect themselves with spikes. Juvenile crabs use their spines to float in the water, while also driving away fish with their spines. Similarly, spiny lobsters protect themselves with spikes that grow in the direction of their shells, arranged along the antennae. Starfish called the Spiny Crown Starfish also have spikes.
Crown of thorn starfish
This starfish has 19 tentacles, and hard pink or yellow spikes protrude from its orange, red, and purple skin. This spike is not only able to pierce the attacker's skin, but also spews out venom that pains the attacker.
Spikes of the crown of thorns starfish
Sea urchins are like living needle pads. Its hard, rounded body is covered with spikes. Sea urchins use spikes to help them move. Spikes can also keep many predators inaccessible. The spines of the sea urchin are connected to the venom-producing glandular tissue.
sea urchin
The long-spined sea urchin can spray venom with spikes up to 30 cm long. Some species of fish and jellyfish hide in the spike crevices of the long spiny sea urchin, and the poison also has spikes connected to the tissue of the venom gland. This fish, which is good at camouflage, lives on the seabed of some tropical waters. Their spikes can stab and kill predators who catch them. It also lives in tropical waters , with a pair of razor-like spikes on each side of its tail. The spiny tail fish uses this spike to slash the attacker.
Spiny tail fish
<h1 class= "pgc-h-arrow-right" > spike in the fish kingdom</h1>
The stingray is named after the spines that protrude from its back. Stingrays can keep these spines upright. The number of spines in the stinger varies, as we can see from the name of the stingray, which ranges from three-spined fish to fifteen-spiny fish. The name stingray also gives people clues to their means of defense. This fish is covered with thorns. When threatened, the stinger sucks the sea water to inflate its body, and then the stinger spreads out in all directions. This makes the stingray larger, and some predators are unable to swallow it. This technique can also frighten some predators, who decide not to provoke prey that suddenly becomes larger.
Stinging pufferfish
<h1 class = "pgc-h-arrow-right" > mammals that spike against enemies</h1>
Armadillo lizards in South Africa also have spikes. When threatened, it bites its tail with its mouth and curls its body into a ball to make the most of the thorns on its body. This method makes it look like a prickly fried doughnut.
Armadillo lizard
Hedgehogs run away or hide in the face of danger. If put in a desperate situation, it will spread the spines and curl its body into a ball to protect its soft belly and head. Hedgehogs can stay in this state for hours. Predators usually stop attacking the unresponsive, prickly ball. Hedgehogs curled up into balls will rewind and stab predators or poke their prickly bodies into the predator's face.
hedgehog
A spiny anteater called the echidna also uses spikes to protect itself. Echidnas are monotremes (egg-laying mammals) that live in Australia. They feed on insects and catch insects with their long, sticky tongues. There are hundreds of spikes on the body of the echidna, and the length of the spikes is about 60 mm. When threatened, the echidna quickly digs into the ground, hiding the body, leaving only a prickly back. They can also curl up into a ball or wedge themselves into cracks in rocks.
echidna
The army of spiny mammals also includes spiny rats in the central and southern United States. Some species of spiny rats have strong spikes, while some spiny rats have hard, piercing hair. Spiny rats also give up their tails when rid of predators. Madagascar, an island nation facing the east coast of Africa, has a spiny mammal called the Falklands hedgehog, which curls itself into a ball like a hedgehog or forcefully bites an enemy or hits its own barbed head into the neck of an enemy.
Spiny rats
< h1 class= "pgc-h-arrow-right" > communicated with spiked weapons</h1>
Some animals only use spikes when attacked. For example, the tree bear monkey, which is a very strange mammal. The tree bear monkey is a slow-moving African animal that lives in trees. The untided 3 bones of its neck are thick, hard spikes that protrude out of the skin. Usually, the spike hides under its fur. However, when threatened, the monkey will curl up inside its body, bending its neck to erect spikes. Currently, some scientists have found these spikes extremely sensitive to touch, and they have also found that tree bear monkeys sometimes rub their necks against each other. Scientists are studying whether sloths use spikes to communicate with each other.
Tree Bear Monkey
Amphibians have always given the impression of being soft all over the body, but that doesn't mean they don't use spiked weapons. The ribbed salamander also has hidden spikes, and its spikes are the ends of its ribs. When attacked, the salamander pushes the bone aid to form rows of bumps in the back. These bumps are covered with venom-producing glandular tissue. Sharp bone endings also pierce out of the salamander's skin.