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They protect themselves by a chemical smell that they release from their mouths that only other animals and insects can sense. This smell refremes other animals from the spider.
With no natural barriers the villagers could not protect themselves from other civilizations, animals and natural disasters.
they blend in to different habitats then the other animals cant hurt them.
Peanut butter!
using their color
Animals use or are born with camouflage this is to protect themselves against predators. Though some have this so they can easily hide and catch other animals to eat.
Some animals that protect themselves with their color patterns are the chameleon, the ladybug, the gila monster, and the poison dart frog. The eastern newt is reddish-orange in color, a warning to other animals that it is highly toxic.
Beavers build dams to keep predators away from them. They can also protect themselves by scratching or biting other animals.
Some animals have horns to protect themselves against predators or to battle each other when it is mating season to fight for the ladies ;)
Turtles will usually use their shells to protect themselves from other animals, weather, or anything else that can harm them. Or they could bite them.
No animals can "turn themselves into other animals".
There are many reasons to protect yourself: from other animals who might want to kill and eat you, from the elements, from natural dangers like rockslides or earthquakes, or even from accidents.