2. Dog and cat fur
You might want to sit down for this one. Turns out some sneaky companies use dog and cat fur on their clothes and mislabel them, so that, well, you don't realize you're buying a coat MADE WITH DOG FUR! Needless to say, be wary when buying furs in China and Russia, where the practice is more common. You can also expect fines of at least $3,000 (and up to $10k) if you're busted at Customs.