You cannot sell the fur of a dog or cat.

The Law Explained

Aimed at protecting domestic pets from the shadowy garment trade, New York strictly forbids the sale or trade of any apparel made from dog or cat hair. The law was pushed by animal rights activists who discovered that imported fur coats sometimes contained mislabeled domestic animal fur. So, spinning your golden retriever's excess shedding into a lucrative sweater business is completely off-limits.