Keen Smell. The panther has advantage on Wisdom (Perception) checks that rely on smell.

Pounce. If the panther moves at least 20 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 12 Strength saving throw or be knocked prone. If the target is prone, the panther can make one bite attack against it as a bonus action.

 Adapt: can gain 1 trait from other creatures it ingests.if the adaptor beasts obatains a new trait the previous trait is lost( at the DM's discretion)

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

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 3) slashing damage.

Spine strike. ranged weapon attack: +4 to hit, range 30/60 ft., one target. Hit: (1d4+3) piercing damage.