Armoured Faithful Hound (Dog Companion)

Pack Instinct.

The dog has advantage on attack rolls against a creature if at least one of the dog’s allies is within 5 feet of the creature and the ally isn’t incapacitated.

 Loyal Companion.

If a party member is reduced to 0 hit points within 30 feet of the dog, the dog can immediately use its reaction to rush to their side, placing itself between them and a hostile creature (moves up to its speed). This movement does not provoke opportunity attacks.

Bite.
Melee Weapon Attack: +3 to hit, reach 5 ft., one target.
Hit: 5 (1d6 + 1) piercing damage. If the target is a Small or smaller creature, it must succeed on a DC 11 Strength saving throw or be knocked prone.

Distract ( 1/Short Rest).
The dog targets a creature within 30 feet it can see. That creature must succeed on a DC 12 Wisdom saving throw or suffer disadvantage on its next attack or ability check before the end of its next turn.

Fetch & Deliver (1/Short Rest).
The hound is trained to carry and retrieve objects under pressure.
As a bonus action on its turn, the hound can:

• Retrieve a small item or potion from a creature within 5 ft. and deliver it to another creature within 30 ft.

• Or, deliver a scroll or key to a specific target, avoiding obstacles with advantage on Dexterity (Acrobatics) checks.