Nettie Spaghetti (thanks to Andrew)
Nettie Lou ( the middle name that Carol gave her)
the Netinator .. only when she's acting up!
Murphy's middle name, by the way, was Murphy O'Brien. He needed a good Irish middle name and this was an homage to my late mother-in-law, who truly would have believed that I had gone insane for embarking on this adventure. (It was her maiden name)
(Digression: Puppies, like children, need a middle name so that you can use the first name, middle name and last name all at once when you need to convey just how much /rapidly you need their attention.
I will never forget the time that Andrew, upon hearing me call the dog "Murphy O'Brien," solemnly inform him: "You'd better listen, mama's getting ticked off."
His other nicknames were pretty prosaic: MurphMurph was the most common.