Most bats do eat insects, but some eat tiny fish, fruit, or pollen and nectar. Everyone has heard of the vampire bat. And they DON'T suck blood. Then they just lick up a little blood. Doctors think we might be able to use bat spit to keep blood from coagulating during dangerous heart operations.
Some bats live together in big colonies during the winter.
Several hundred males and females may huddle for warmth, hanging upside-down in a cave or old building. Each mother bat has one or two babies in early summer. The babies cling to their mother's furry belly and drink milk. The mothers and babies all huddle together for warmth. If you scare the mothers, they will probably drop their babies and accidentally kill them.