Heart is... (Korean: 마음이; RR: Maeumi), also known as Hearty Paws, is a 2006 South Korean drama film directed by Park Eun-hyung and Oh Dal-kyun.

Two siblings, an 11-year-old boy named Chan-yi (Yoo Seung-ho) and his little sister So-yi (Kim Hyang-gi), have been abandoned by their mother, and are left to survive on their own.

For his sister's 6th birthday, Chan-yi decides to give her a dog.

He sneaks into a house of an old couple and steals a newly born puppy, which she's been longing to have.

The film was released in South Korea on October 25, 2006, and sold 1,042,166 tickets nationwide.