Is there anything so perfect on a hot summer afternoon as the cold sting of a strong margarita—the salt, the slush, the citrusy tang of tequila and blended sunshine?

Well, the next time you sip such a concoction—or anything else made with tequila—take a minute to think about bats.

Tequila comes from blue agave, and the lesser long-nosed bat, which is considered endangered in both the United States and Mexico, is the plant’s primary pollinator. Like hummingbirds, the bats hover from flower to flower lapping up the agave’s sugary goodness, all while showering it in pollen from other agaves they’ve visited that night.