bumblebee.org

mxrPM TIL a bumblebee will stick up a middle leg if it’s annoyed by your presence, which means “back off!”. Otherwise they are docile to the point that you could usually handle one without negative consequence.
JYnpV TIL bumblebees have parasitic "doppelgangers" called cuckoo bumblebees that resemble a specific race enough to be able to sneak into their nest, kill the queen, and trick all the workers into feeding their offspring and ultimately taking over the whole nest before moving onto their next target.