This tiny dog rides around on the back of her best friend: A giant Saint Bernard

An unlikely pair of pups became best pals despite their dramatic size difference - and the internet has fallen in love them.

Tiny Japanese chin Lulu has taken to riding around on the back of Saint Benard Blizzard and it is completely adorable.

Owner David Mazzarella - who posts pictures on Instagram of the two friends - says that it all started "because [Lulu] was too young to be on her own."

"Her favourite place was on his back when he was laying down and over time she got comfortable in this position. When he stood up, she would jump around constantly to get on his back where she felt the most comfortable."

Now the two are inseparable! Take a look at some of their adventures together: