Rookie Appears at Trenton Thunder Game

Adorable.

The Trenton Thunder just posted a picture of the newest member of the team, Rookie the bat dog. Rookie will make his official debut with the Yankees' Double-A affiliate in 2015 but was on hand for Opening Day.

Rookie, the bat dog makes his debut for @TrentonThunder on #OpeningDay! pic.twitter.com/lBWLt8yDjw

- YES Network (@YESNetwork) April 3, 2014

Rookie might give Hank a run for his money as the most adorable dog in baseball.