Keen Hearing and Smell. The cat has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) fire damage.

Pounce. Ranged Attack: +8 to hit, reach 15ft., one target. Hit: 12 (2d6+4) bludgeoning damage. The cat jumps and lands pinning a creature to the ground. Dex save 12 to not be pinned beneath the cat. 

Fire Breath (Recharge 5–6). The cat exhales fire in a 15-foot cone. Each creature in that area must make a DC 12 Dexterity saving throw, taking 21 (6d6) fire damage on a failed save, or half as much damage on a successful one.