- Racer
- Radar
- Rainbow
- Raisin
- Ralph
- Rambo
- Raphael
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- Rascal
- Raven
- Razor
- Rebel
- Red
- Reese
- Reggie
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- Rembrandt
- Reno
- Reuben
- Rex
- Rhett
- Ricky
- Riley
|
- Ringo
- Rio
- Ripley
- Robbie
- Robin
- Rocket
- Rocky
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- Rodman
- Roger
- Romeo
- Ronnie
- Rooney
- Rory
- Roscoe
|
- Rose
- Rover
- Roxy
- Roy
- Royce
- Ruby
- Rudolph
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