Griffon

Heightened Sight. The griffon's Perception is 18 when perceiving by sight.

Monstrosity Resilience. The griffon is resistant to exhaustion and to the frightened condition.

Pack Tactics. The griffon has advantage on attack rolls against a creature if at least one of the griffon's allies is within 5 feet of the creature and the ally isn't incapacitated.

Pounce. If the griffon moves at least 20 feet straight toward a creature and then hits it with a Claws attack on the same turn, that target must succeed on a DC 14 STR save or be knocked prone. If the target is prone, the griffon can make one Beak attack against it as a bonus action.

Multiattack. The griffon makes one Beak attack and one Claws attack.

Beak. _Melee Weapon Attack:_ +6 to hit, reach 5 ft., one target. _Hit:_ 8 (1d8+4) piercing damage.

Claws. _Melee Weapon Attack:_ +6 to hit, reach 5 ft., one target. _Hit:_ 11 (2d6+4) slashing damage.