Cats have claws and teeth to protect themselves from predators.
cats have fur to keep themself clean and in the winter they keep themself warm if they do not have fur they go through peoples house looking for stuff
to proctect rib
they proctect the body if is danger
By grounding electrical energy.
Sponges protect themselves with spikes in their body.
with its sharp needle like fangs
proctect yourself
cells are cells that are proctect but cancer can put them in danger
It causes healing to begin at the injury site.
Citizens protect themselves with police departments. Nations protect themselves with a military.
This is called a patent.
By not killing them is a simple answer. Otherwise they can sign petitions and what not to help 8>