The animals are a great help.
Starsky the dog helps Roz scout out murder locations and occasionally finds a body (not human so far.)
Magnum, the black cat, assists with the writing process and likes to sit on the keyboard. The ginger cat doesn't actually belong to us but spends his life here and particularly likes sitting on people's shoulders and stopping them from working too hard.
The much-loved character of Hamlet is based on a mixture of all the cats Roz has known, but his appearance was inspired by Roz's friend's beautiful black and white cat, Paws.