Skills
Monsters › Parts of a Stat Block · SRD 5.2.1 p. 255
The Skills entry specifies a monster’s skill proficiencies, if any. For example, a monster that is very perceptive and stealthy might have bonuses to Wisdom (Perception) and Dexterity (Stealth) checks. A skill bonus is the sum of a monster’s relevant ability modifier and its Proficiency Bonus. Other modifiers might apply.