Can you use a toucan as a pet?

No a toucan is not a parrot. Toucans, or ramphastids are a family of birds in the order piciformes. Woodpeckers, and barbets are also in the order piciformes. Parrot actually refers to an entire order of birds, the psitticiformes, and since toucans are piciformes rather than psitticiformes they are not a parrot.