Echolocation. While it can't hear, the bat has no blindsight.
Keen Hearing. The bat has advantage on Wisdom (Perception) checks that rely on hearing.
Actions
Bite. Melee Weapon Attack: +0 to hit, reach 5 ft. one creature. Hit: 1 piercing damage.
Keen Smell. The cat has advantage on Wisdom (Perception) checks that rely on smell.
Actions
Claws. Melee Weapon Attack: +0 to hit, reach 5 ft. one creature. Hit: 1 slashing damage.