Unusual animal friendships are always great, but this one features an especially unexpected pairing: Osiris is a three-year-old Dutch Shepherd who loves hanging out with a three-month-old fancy rat named Riff Ratt. The duo live in Chicago and their owners document their friendship on Instagram, Tumblr, and YouTube. Presumably Osiris and Riff Ratt bond over how much they both hate cats.
Here's a video of them playing together:
And some photos from their various social media accounts: