Odd couples are the cutest, especially when it comes to mismatched animal buddies. Osiris and Riff Rat are an unlikely animal pair, and they are just about the cutest pals ever.
The 3-year-old Dutch Shepherd therapy dog has taken watch over the little rat, who was rescued at four weeks old and nursed back to health. The pair has been inseparable since. Their humans have been documenting their relationship on Instagram, and the pictures they've shared are simply precious. Osiris and Riff Rat play together - including the times when Osiris lets Riff climb into his mouth. It's pretty clear that their relationship is built on a lot of mutual trust - just check out the pictures below.