I this the pet names that have been around the longest are the best! Original is good too, but I have two dogs that fit perfectly to their names! [name]Madison[/name] is a 15 year old golden (thats 105 in dog years) and a 5 year old golden who thinks she still 1 years old named [name]Cassie[/name]. In my opinion even though there a lot of pets with simple names such as Madsion and [name]Cassie[/name], they seem to be the better fit, right?
With dogs, you want them to have simple names or nicknames so that they can recognize them, I believe. But I like to get creative with my pet names and give them names that I wouldn’t use on people for whatever reason. 
Two-syllable names are best for dogs. These short and simple names are more easily recognized when they are called.
Yeah and for my dog ([name]Cassie[/name])we kinda sing a high note for [name]Cass[/name] then a little higher for the ie. Sometimes we just hum the notes and she thinks its her name!