A smart French bulldog uses its tongue to open the cage door in Beijing on November 2nd.<br /><br />The video shows the black dog using its tongue to lick the bolt and lift it up to unlock the door of its cage. <br /><br />Then it can be seen pushing the door to open by one of its front legs.<br /><br />Since the dog saw its owner, it stayed in the cage to let its friend go out first.
