they use there spit as nests
Caves.
they live in trees
Caves because bats live in caves.
Many species of bats do live in caves, yet many fruit bats do not. Fruit bats prefer to live outside roosting in the daylight, but they only go for food at night.
somewhere around the world in caves dark caves
Baseball bats
I think sac-winged bats live in caves together.
dark and suckish.
Yes
yes
Bats go to caves because caves are safe and warm. Because caves are safe for bats, bats feel safe there, not scared. Bats that live in caves don't care whether it's dark because they can barely see either way. Instead they navigate using echolocation.
Bats usually live in dark damp caves