Non-human animals use tools. Gulls use sticks to pry oysters out of shell.
OTOHand, if something uses a tool to make another (generation) tool, that is something!
The gulls around here use gravity to open bivalves. The crows will drop walnuts from power lines, repeatedly. I saw a couple that had gotten ahold of a golf ball. They were a bit puzzled.
“Gulls use sticks to pry oysters out of shell.”
Why is it just limited to man or close relatives. Many animals like sea otters still use stones to crack shellfish. Sometimes on the stomach while floating. And there are other animals that use tools like:
https://www.popularmechanics.com/science/animals/g39714258/animals-using-tools/
Paranthropus was man, not a relative. He didn’t survive because he wasn’t as smart as sapien sapien who hid in the trees during the day when most of the dangerous animals were out hunting and he forged at night. Brains over brawn for sapien.
wy69