may have been the celebrity guest on The Tonight Show
Tuesday, but it was the actress who walked away star-struck.
During an appearance to promote her new movie New Year's Eve
and her recently-launched neutering campaign, I Hate Balls
, Heigl scored some one-on-one time with pool-playing pooch
"How cute is that little dog?" she says in a backstage video
where she cuddles the Chihuahua and chats with owner Connie Baldwin. "He's so sweet!"
Earlier in the program, host Jay Leno enlisted Amadeus to raise funds for I Hate Balls, which seeks to lessen the population of shelter animals by encouraging pet owners to spay and neuter their pets. For every billiard ball that Amadeus sunk in 30 seconds, The Tonight Show
donated $500 to the cause, ultimately giving away $7,500.
"Huge thank you to Jay Leno and Amadeus for helping to raise much needed funds for the I Hate Balls campaign last night," Heigl later Tweeted