I smell things. When I get a scent, I follow it. The world is full of smells, you have no idea how intense. I can find lots of things with my nose. People are surprised with what I can find.
And I know Harry can even find more things than I. I follow him when we go out together. He finds lots of food. Not always do I like what he finds. Harry loves to eat everything. People have no idea how smelly they are. It can be intense. They are surprised when I stay away from them. It hurts.