I have found six : porcupine, hedgehog, echidna, spiny rat, sea urchin, and tenrecs.
a porcupine has quills
These are called quills. They come loose and get stuck in the skin of animals that they come in contact with.
it has about 30,000 quills
over 30,000 quills
some animals are accustomed to the cactus so it doesnt hurt them.
Animals that eat porcupines usually flip them over and attack their bellies, which have fewer quills. They may also target the face or head to avoid the sharp quills on the back. Some predators, like fishers and wolverines, have thick fur that protects them from the quills.
Porcupines do not have venomous or dangerous weapons, but they possess a unique defense mechanism: quills. These sharp, barbed quills cover their bodies and can easily detach when a predator comes into contact with them. While porcupines are generally not aggressive, their quills can cause significant injury to animals that attempt to attack them. Therefore, while they are not inherently dangerous, their quills can pose a threat to other animals.
Porcupine
Stops of Various Quills has 55 pages.
An adult porcupine can have up to 30,000 quills on its body.
some porcupines have quills on their nose but some dont so animals eat em by the nose.
1,000,000