Selling Dog or Cat Fur?

What kind of society do we have now that makes a law like this one necessary? In Oregon, Ore. Stat. § 167.390 prohibits commerce in fur of domestic dogs and cats, but only if "the fur is obtained through a process that kills or maims the cat or dog."

So if you really want that coat made from cat hair, you either have to wait for the cat to shed enough or shave enough cats to make your coat. I wonder if this law has created a black market in dog or cat fur. Does Oregon ever arrest people for selling a dime bag of calico fur, or a brick of lhasa apso fur?

This section also prohibits bartering such fur, so you can't trade two siamese pelts for a Maine coon pelt, for example. Again, why would we need such a law?