Radar

Ragdoll

Rage

Raggedy Ann

Raging Bull

Ragmop

Ragtime

Ragu

Rai

Raider

Rain

Rainbow

Raisin

Rajah

Ralph

Rambo

Ramsy

Rani

Rascal

Rasmus

Rasselas

Ratul

Ravage

Ravel

Raven

Ravin

Rawhide

Ray

Razz

Razzmatazz

Reba

Rebel

Redbeard

Reef

Reese

Rega

Regalo

Rele

Remi

Remington

Remmie

Remy

Rendy

Renegade

Reno

Repo

Resham

Reshma

Restus

Reuben

Reva

Rex

Rezza

Rhapsody

Rhea

Rhett

Rhinestone

Rhino

Rhodes

Rhone

Riches

Rickson

Ricky

Ricky-ticky-tavi

Ricochet

Ricotta

Rider

Riffraff

Rigaletto

Riku

Riley

Rin Tin Tin

Rinchen

Ringleader

Ringo

Rio

Rip Van Winkle

Ripley

Ripple

Riser

Rita

Ritz or Ritzy

Riva

River

Roach

Rob Roy

Robbie

Robby

Rocca

Rocco

Rock

Rocker

Rocket

Rocketman

Rocko or Rocky

Rococo

Rodeo

Roffe

Rogan

Rogue

Rojo

Rollo

Rolls

Roma

Romeo

Romo

Romulus

Romy

Rona

Rondeau

Ronnie

Roo (Kangaroo)

Rookie

Rooster

Root Beer

Rooter

Rosa

Rosarita

Rosco

Roscoe

Rosebud

Rosey

Rosie

Rosita

Ross

Rot

Rothschild

Rotten

Roughrider

Roux

Rover

Rowdy

Roxanne

Roxi

Roxy

Royal

Rubis

Ruby

Ruckus

Rudy

Ruff

Ruffian

Ruffles

Rufus

Rugby

Rugrat

Rumba

Rumpelstiltskin

Runner

Runt

Rupa

Rupert

Rushil

Rusty

Ryder

Ryu