Cheetagator

Hold Breath. The cheetagator can hold its breath for 15 minutes.

Pounce. If the cheetagator 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 15 Strength saving throw or be knocked prone. If the target is prone, the cheetagator can make one bite attack against it as a bonus action. 

Preferred Environment. The cheetagator has advantage on stealth rolls if it is long grass or shallow water. 

Pack Hunter. The cheetagator has advantage on attack rolls if the target is engaged in combat with a fellow cheetagator. 

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 7 (1d10 + 3) piercing damage, and the target is grappled (escape DC 15). Until this grapple ends, the target is restrained, and the cheetagator can't bite another target.

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