Blink Wolf

Keen Hearing and Smell. The wolf has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 2) piercing damage. 

Teleport (Recharge 5–6). The wolf magically teleports, along with any equipment it is wearing or carrying, up to 40 feet to an unoccupied space it can see. Before or after teleporting, the wolf can make one bite attack.

Grapple. The wolf can perform the Grapple action with a modifier equal to their master's proficiency bonus on their Strength (Athletics) check. Using Teleport or the Blink Escape reaction will break the grapple.

Blink Escape (Once per Encounter). When the wolf takes damage, it can use its reaction to teleport, along with any equipment it is wearing or carrying, up to 40 feet to an unoccupied space it can see. The wolf must roll to recharge at the start of its next turn.