By fighting each other in competition of better habitat. The Eurasian beaver have been shown to use branches and sticks as weapons if the claws have been damaged in previous engagements.
they defend their selves by their claws
not..
by spine leaves
spit and kick
By stabing them selves
Mongooses protect them selves by dancing and dogging enemies.
we protect ourselves from running fast and running
beavers build dams which creat ponds where they can avoid predators they dont like
no
hard shell
they bit them
to protect theme selves