A baby chihuahua (puppy) born in Japan with a heart-shaped pattern on his coat becomes a national idol (see video) – almost like the Japanese version of Knut.

A puppy named “Heart-kun” was born with a heart-shaped pattern on his coat.

Born at a Dog shop in Japan, no make-up or modification has been added to the one-and-a-half-month old dog.

The shop owner Emiko Sakurada said this is for the first time a puppy with these marks has been born out of over a 1,000 she has bred.

She says the unusual feature in the puppy has brought good luck to her and anyone who sees him.

Though many people have enquired about buying the dog from around the country after local television aired pictures of it, the owner says she has no plans to sell it.