Traits

Keen Hearing and Smell: The hellhound monster is blessed with a superior wisdom (Perception) check. This means that it can rely on their hearing and smell.

Use Pack Tactics: The hello-hound monster has an advantage in an attack roll that is against the creature if at most one of its allies is within 5ft. of the creature and the ally isn’t incapacitated.

Actions

Take a biteUsing this bite attack, the dnd5e monster can launch a melee attack. +5 to hit, reach five feet, one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) fire damage.

Fire Breath (Recharge 5-6): The dog can exhale the flames in the cone at 15 feet by following this fire breath. Every creature in the area should make a DC 12 Dexterity saving throw, and also take 21 (6d6) damage for each failed save.

Attributes Of Hell Hound Monster DnD 5E

AC 15 (Natural Armor).
Alignment Lawful Evil
CHA 6
CON 14
Challenge Rating 3
DEX 12
HP 45 (7d8+14)
INT 6
Immunities Fire
Languages However, it can’t speak Infernal.
Passive Perception 15
Roll 0 1d20 + 5 1d8+3
Roll 1 1d20 + 0 d6
STR 17
Senses Darkvision 60 Ft.
Size Medium
Skills Perception +5
Speed 50 ft.
Type fiend
WIS 13