Scarlett Johansson dreams of writing a children's book about her pet dog.

The Avengers star admits she is considering putting pen to paper to tell the story of her pooch, a former stray which she rescued from the streets.

Johansson tells Britain's Elle magazine, "(She) was literally a street rat. And now she's living the life of Riley. I thought about doing a kids' book about it. Can you imagine? This is a street dog - who knows what her life was like? And here she is flying to Paris, living this glamorous lifestyle. She's suddenly this Hollywood dog... It's sweet, right?"