A Sweet Friendship That Is Very Unlikely (14 Pics)

3 year old Osiris is a Dutch Shepard therapy dog and his best friend is a 3 month old pet rat named Riff Rat. These two are so sweet and loving to one another it is almost hard to believe that this story is not completely made up. 

"Osiris and Riff are chewing off the fuzz from opposite sides of a tennis ball."

"This is super typical. Riff Ratt really likes licking the inside of Osiris' mouth. I'm sure you all are wondering if we're afraid Osiris will eat Riff - NOPE! Osiris has helped foster and care for dozens of animals and he is the gentlest dog I've ever met."