A random Bestiary

Young Red Dragon

Large dragon, chaotic evil

Armor Class 18 (natural armor)
Hit Points 178 (17d10 + 85)
Speed 40 ft., climb 40 ft., fly 80 ft.

STR	DEX	CON	INT	WIS	CHA
23 (+6)	10 (+0)	21 (+5)	14 (+2)	11 (+0)	19 (+4)

Saving Throws Dex +4, Con +9, Wis +4, Cha +8
Skills Perception +8, Stealth +4
Damage Immunities fire
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 18
Languages Common, Draconic
Challenge 10 (5,900 XP)

Actions

Multiattack. The dragon makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 6) piercing damage plus 3 (1d6) fire damage.
Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.
Fire Breath (Recharge 5–6). The dragon exhales fire in a 30‐foot cone. Each creature in that area must make a DC 17 Dexterity saving throw, taking 56 (16d6) fire damage on a failed save, or half as much damage on a successful one.