After discovering this material, I headed straight home for a cappucino and muffin.
After consulting my Doctor Poo manual re: seperadus muffinus I discovered two usual causes. The first is the publicus depositus while on the moveus syndrome. Not quite finished but egged on by the dog owner, the dog must try to complete the event and is left with a one-two delivery.
The second cause is the Post-depositus noseus where either the dog in question or another dog has, you know, just checked out whats happened and may have disturbed the material.
Watch out for Seperadus Muffinus as they are usually fresh and aromatic.