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

Pounce. If the zombie velociraptor 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 10 Strength saving throw or be knocked prone. If the target is prone, the zombie velociraptor can make one bite attack against it as a bonus action.

ACTIONS

Multiattack. The zombie velociraptor makes two attacks: one with its bite and one with its claws.

Bite. Melee Weapon Attack:+5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage. On a successful hit the target makes a DC 10 Constitution check, on a failed save a target takes 3 (1d6) nercrotic damage, or half as much on a successful save. 

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage. On a successful hit the target makes a DC 10 Constitution check, on a failed save a target takes 3 (1d6) nercrotic damage, or half as much on a successful save.