amoeba

It is one of 700 known slime moldsbelonging to the kingdom of the amoeba.It is a single-celled organism, a cell,

So here's some other organisms at the similar scale.This animal is the size of a paramecium and an amoeba,and it has a brain of 7,000 neurons that's so small --

we've come a long, long way.We started off as a teeny, teeny little one-celled amoeba,tiny, just sticking onto a rock, and now, voila, the brain.