DOG NAME	MEANING
Radar	A method of detecting distant objects
Rags	Threadbare or tattered clothing
Rambo	Popular action films starring Sylvester Stallone
Ranger	Warden employed to protect a natural area
Rascal	One that is playfully mischievous
Rebel	To resist or defy an authority
Reggie	Powerful ruler
Regis	Emmy Award-winning American television personality
Remus	The son of Mars and eponymous founder of Rome
Reno	Gambler
Rex	From the word Tyrannosaurus rex
Rhett	Enthusiastic
Rin Tin Tin	Name given to a German Shepherd dog in film
Ringo	English musician, singer and actor
Ritz	Famous hotel, cracker
Rockey	Form of Rocky
Rocko	Form of Rocky, animated television series
Rocky	Consisting of, or abounding in rock or rocks
Rolf	Wolf councel
Rookie	An untrained or inexperienced recruit
Rosco	Deer forest
Roscoe	Deer forest
Rover	Wanderer, popular dog name
Roxie	Dawn of day, from Roxanne
Roxy	Dawn of day, from Roxanne
Ruby	Reddish
Rufus	Popular pet name
Runt	An undersized animal
Russel	Red haired
Rusty	Red haired