Even a dog can make it if you put your heart into its role as a hero.
You play one dog if I use a manner to play the leading role, and a dog can become the leading role equally.
the dog will be a leading role if you are playing it with an intention to be.
If you act as a dog with the attitude of being a hero, the dog will become the hero.
If you leading a sound attitude to act a dog, the dog will become the leading actor.
If you play a dog with the attitude of playing a starring role, then the dog will be the star of the show.