"Asian giant hornets" are an invasive and potentially deadly species and they've just been found in the US for the first time.
Researchers nicknamed it the "murder hornet".
Its venomous sting can kill a human if they are stung several times.
They're also strong enough to puncture a beekeeper's suit.
The hornets are more than two inches long and have reportedly been attacking bee hives in Washington state. When attacking honey bee hives, CNN reports the hornets kill adult bees and devour bee larvae and pupae.
The giant hornets especially target bees between late summer and the fall.
The giant hornet was first spotted in the state in December, and scientists believe it started becoming active again last month, when queens emerge from hibernation to build nests and form colonies.
Scientists do not yet know how they made it to the US.