Keen Smell. The cat has advantage on Wisdom (Perception) checks that rely on smell.
Death Claws. The cat can, on an attack that hits, add 2d8 necromantic damage to the attack. After doing this, the cat must wait a round before attacking again.
Claws. Melee Weapon Attack: d20+5 to hit, reach 5 ft., one target. Hit: d6+3 slashing damage.