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

Pounce. If the Leopard 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 13 Strength saving throw or be knocked prone. If the target is prone, the Leopard can make one bite attack against it as a bonus action.

Out of Phase.  the leopard can pass through solid objects as if it were rough terrain. If you end your turn within an object, you are shunted to the nearest available space, taking 1d10 force damage for every 5 feet moved. 

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d10 + 3) piercing damage.

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage.

Teleport (Recharge 4–6). The leopard magically teleports, along with any equipment it is wearing or carrying, up to 40 feet to an unoccupied space it can see. Before or after teleporting, the leopard can make one bite attack.