An insincere and evil friend is more to be feared than a wild beast; a wild beast may wound your body, but an evil friend will wound your mind. Buddha
You notice the slight but essential differentiation.
A beast or animal might hurt your body. It might rip off an arm.
But an evil friend, an evil human being, might actually wound your mind. S/he might hurt you deep inside, kill parts of your thoughts and freedom.
As they say: keep your friends close but your enemies closer.