Sharp teeth. About the same as a mouse defending itself.
It protects itself
Gerbils' tails should be as long as the gerbil itself. If they don't, their balance will be disturbed.
a tiger salamander protects itself by poisoning its prey.
the eye lashes protects the eye from on coming objects
it protects itself by being on a high tree or being in a herd with its friends and relatives.
a falcon protects itself with its claws and beak.
what do you mean a puffing
by it's thorns
it bites its enemy
Armour and a sword
It doesn't.
A bull shark protects itself by biting.