Keen Sight and Smell. The owlbear has advantage on Wisdom (Perception) checks that rely on sight or smell.

Reckless Attack. Adolescent Owlbear may attack recklessly. Doing so it gains Advantage on Strength based Attacks, in turn attacks on Adolescent Owlbear have advantage until it's next turn. 

Multiattack. The owlbear makes two attacks: one with its beak and one with its claws.

Beak. Melee Weapon Attack: +3 to hit, reach 5 ft., one creature. Hit: 10 (1d8 + 3) piercing damage.

Claws. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 14 (2d6 + 3) slashing damage.

Adorable Nature. Adolescent Owlbear makes itself appear adorable and innocent making a Charisma Saving Throw contested by the target creature’s Wisdom Saving Throw.

On a success the target is Charmed until the Adolescent Owlbear’s next turn, or until attacked by Adolescent Owlbear.

If target creature has been attacked by Adolescent Owlbear, this Charisma Saving Throw is taken at Disadvantage. 

Opportunity Attack. When a creature within 5 feet of Adolescent Owlbear moves away without disengaging it may make one Peck or Claw attack with it's reaction.