👉 Opiognathus is a genus of mammals in the order Rodentia, which includes some of the most common and diverse animals on Earth. These species are characterized by their large canine teeth that grow long and thin as they grow and develop into adult molars. The teeth are adapted for chewing hard, tough foods such as nuts and seeds, which is why these animals are commonly referred to as "canine" because of their ability to break down and digest them.