Visakha

Once you notice the size of the Asian giant hornet—nearly as big as one’s thumb—you’ll know why it needed to be included on this list. The hornet’s wingspan is bigger than that of some hummingbirds, and can fly at an impressive 25 miles per hour–even faster when in a hive. This huge hornet, also referred to as the Japanese giant hornet, is responsible for numerous deaths in Japan every year.

To fully grasp the size of the Asian Giant Hornet, check out this video of a man’s “pet” hornet: