Interesting fact of the day: if you put butter on an ant he, along with every other ant in the colony, will think he is dead. He will either walk over to the ant graveyard himself or be carried there by another ant. The ant will usually stay there until the butter wears off.
The reason for this is that butter is 35% Oleic Acid. This is the Fatty Acid responsible for triggering this response.
@yahananxie Not to mention delicious :)