nothing
They use their hands
Besides humans, octopus.(That is what I think and believe)
Humans have the strongest weapons :)
The closest relative to humans besides primates is the bonobo, which is a type of great ape.
They were farming, made pots, weaved cloth, had polished tools and weapons, trade by barter and could make huge stone monuments
i guess...
Cats.
Humans:)
Humans are animals. If you meant what is the smartest animal besides humans, it is the dolphin and the elephant.
Many other organisms besides humans produce epinephrine. It is found in some plants, insects and mammals.
humans
Yes, animals can get cancer just like humans can.