The professor explained that why bats hang upside down for two reasons. The first reason is that, hanging upside down has assets to hide from predators. They are mainly activated at night when predators sleep. By hiding in secluded spots, they escape from dangers. Second is, since small bats have so week wings that even don't have enough power to take off in a dead stop, in addition to undeveloped hind legs, bats have to hang upside down to ready for taking off whenever they need. Staying in high position allows bats to start to fly with substantial power. In conclusion, the professor illustrated the reason why bats hang upside down, which is for self-protection and gaining power for flying.

The professor explained why bats hang upside down for two reasons. The first reason is that, hanging upside down has assets to hide from predators. Bats mainly sleep during the day when predators are active. By hiding in secluded spots, they escape from dangers. Second is, since small bats have so week wings that even don't have enough power to take off in a dead stop, in addition to undeveloped hind legs, bats have to hang upside down to get ready for take offs whenever they need. Staying in high position allows bats to start to fly with substantial power. That's why bats hang upside down.