If there’s one thing we truly love at Woof Woof, it’s seeing the unlikely friendships that can blossom between two unfamiliar species — and dogs seem to be pretty awesome at doing just that.

Osiris and Riff Rat are best friends who are completely inseparable despite their huge size gap. Osiris is a 5-year-old Dutch Shepherd, while Riff Rat is as his name would suggest, a 7-month-old rat. The partners in crime can’t stand a second apart and the level of trust they have for one another is mindblowing!