Weapons

I believe that humans are the only animals on the planet to create weapons.

This applies to making external apparatus that is used to harm another living thing. There are, of course, poisonous plants and venomous animals and such, but these are naturally occurring, evolutionary adaptations, not items crafted by that being for the sake of doing harm. Except for humans, all living beings, including the poisonous/venomous ones, use only those tools they have naturally to inflict harm on other beings. This includes claws, teeth, spikes, quills, horns, stingers – nature can be creative!

I suppose some animals use things like rocks as tools for hunting or eating – like otters using rocks to break open shells of mussels and the like. But, I would still consider that a tool, not a weapon. I think of a tool as something used to make a task easier, but a weapon is something you have to create with the intent of doing harm…