A man was transporting two similar looking snakes to the veterinarian. One was the Coral snake, and the other was the Scarlet King snake. They both had similar colour patterns, which made it very hard to determine which is which (they both have yellow black red patterns). A big difference is that the Coral is very venomous, while the Scarlet King is non-venomous. As he got them to the veterinarian building to secure them, he realized they had both gotten out of their cage. When he saw the first one, he reached down without a second glance, grabbed it, and brought it inside, knowing that if it bit him he wouldn't be poisoned. How did he know it was the non-venomous snake?