it really depends on what sort of dog it is, its sex and personality, colur/appearence and what sort of personality it will be givin by that name.
for instance, naming a chiwahwah killer, would make your dog seem a bit of a joke, and naming a rottie killer would make people possibly a little apprehensive it its presence.
i am 15 right now, though i am interested in getting a kelpie and a german shorthaired pointer,
kelpie - female - krill
pointer - female - unit
i also like the names
badger
domino
major
tusk
guiness
thistle and many more
apparently it is better tho name your dog a name that has 2 or more syllables in it so that your dog can distinguish its name more easily