Young Spinosaurus

Huge Beast, unaligned

Armor Class 14 (natural armor)

Hit Points 105 (10d12+40)

Speed swim +30, walk +50

Challenge 5

STR
23
+6
DEX
11
+0
CON
19
+4
INT
2
-4
WIS
11
+0
CHA
8
-1

Skills perception +3

Senses passive Perception 13

Languages -

Special Abilities

Tamed. The spinosaurus never willingly attacks any reptilian humanoid, and if forced or magically compelled to do so it suffers disadvantage on attack rolls. Up to three Medium or one Large creatures can ride the spinosaurus. This trait disappears if the spinosaurus spends a month away from any reptilian humanoid.

Actions

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.

Source: Tome of Beasts · OGL/Open