Multiattack

The spinosaurus makes one bite attack and two claw attacks.

Bite

Melee Weapon Attack: +9 to hit, reach 10ft., one target. Hit: 25 (3d12 + 6) piercing damage. If the target is a Medium or smaller creature, it is grappled (escape DC 16). Until this grapple ends, the target is restrained and the spinosaurus can't bite another target.

Claw

Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.