Tyrannosaurus Rex
Huge Beast, unaligned
Armor Class 13 (natural armor)
Hit Points 136 (13d12+52)
Speed walk +50
Challenge 8
STR
25
+7
DEX
10
+0
CON
19
+4
INT
2
-4
WIS
12
+1
CHA
9
-1
Skills perception +4
Senses passive Perception 14
Actions
Multiattack. The tyrannosaurus makes two attacks: one with its bite and one with its tail. It can't make both attacks against the same target.
Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 33 (4d12 + 7) piercing damage. If the target is a Medium or smaller creature, it is grappled (escape DC 17). Until this grapple ends, the target is restrained, and the tyrannosaurus can't bite another target.
Tail. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 20 (3d8 + 7) bludgeoning damage.
Source: 5e Core Rules · OGL/Open