Ferrets are also relatively intelligent for having such silly small brains. They are able to solve problems which interest them. For example, how to get into the cabinet to drag away all the rolls of paper towels. However, this ability to get into and open things can be a problem, so see the section on ferret-proofing. Ferrets have good memory and know where they put things, like a squirrel remembers where he buries a nut.
Ferrets can also develop special attachments to certain toys.
One of my ferrets goes crazy when you squeeze her squeaky hedgehog. She immediately comes tearing around the corner to the sound of the toy and tries to snatch it out of your hand. It's as she thinks it's one of her babies crying for mother. I can even squeeze it 100 feet from my house on the lawn and both ferrets will come running out an open door to the sound of the toy. The mother ferret grabs it out of my hands and they both run back into the house with tay and tails all puffed up.