Animals that use their spikes as defence

Sea Urchins Sea urchins are marine animals that have a spherical body that is covered with sharp spines.

Porcupines Porcupines are large rodents with coats of sharp spines, or quills, that protect them against predation.

Hedgehog A hedgehog is a spiny mammal of the subfamily Erinaceinae, in the eulipotyphlan family Erinaceidae.

Echidna They are also known as spiny anteaters, are quill-covered monotremes belonging to the family Tachyglossidae.

Thorny dragon It is a species of lizard in the family Agamidae, that has thorns in the whole body 

Armadillo girdled lizard The species is endemic to desert areas along the western coast of South Africa.

Lionfish Pterois is a genus of venomous marine fish, commonly known as lionfish