While it's tempting to lump all hornets together under "the absolute worst" insect category, there is one species that stands above the rest -- the giant Japanese hornet. These things are massive, merciless killing machines. They primarily prey on colonies of docile Japanese bees, eating their honey and larvae. Incredibly enough, it only takes a handful of these suckers to wipe out an entire honey bee colony -- a sad fact that beekeeper Sakamoto Ryouta learned back in 2014. Luckily, he had already set a trap for the giant hornets, but it still wasn't enough to stop the attack. Considering that without honey bees, we could lose "70 of the around 100 crop species that feed 90% of the world," these hornets are effectively killing our food source. Can't we all just get along?!