That's the thing though. The deception, and most importantly are the horses even safe to eat?
As for pig meat in meat thought to be beef, that has happened up here in Nova Scotia. The reason was profit (pork is cheaper).
Believe it or not, lobster and crabs are crustaceans and are a part of the arthropod family, which include caterpillars, cockroaches, and spiders!
A Galactic Funking Hunt Wit Not Wont