| Your Precious Pet's Names |
| Sabac | Sabaka | Sabrina | Sadie | ||
| Sabine | Sable | Sachi | Sade | Saffron | Saffy |
| Sake | Sakura | Salem | Salinger | Sally | Salome |
| Sam | Samantha | Samara | Samarai | Samba | Sambuca |
| Samuel | Samwise | Sandy | Santa | Sapphire | Sarabi |
| Sarge | Sasha | Sassy | Satan | Satchmo | Satin |
| Saul | Sausage | Savannah | Saxon | Sayonara | Scamp |
| Schnapps | Schnell | Schooner | Schubert | Schultz | Schumacher |
| Scooter | Scope | Scorch | Scorpio | Scotch | Scottie |
| Scratchy | Scruffy | Scully | Seamore | Seamus | Sean |
| Seiko | Seki | Selena | Selina | Senator | Senna |
| Senorita | Sentry | Serena | Sergei | Sesame | Seth |
| Seymour | Shadow | Shae | Shaggy | Shah | Shaka |
| Shakti | Shaman | Shamrock | Shana | Shandy | Shannon |
| Shari | Shark Bait | Shasta | Shawnee | Sheba | Sheeba |
| Sheik | Sheila | Shelby | Shelley | Shen | Shep |
| Sherlock | Sherman | Sherpa | Sherry | Sherwood | Shifty |
| Shiner | Shing | Shino | Shiraz | Shirley | Shiva |
| Shorty | Shovel | Shreds | Shrek | Siam | Sick um |
| Siegfried | Sienna | Sierra | Sigmund | Sigourney | Silas |
| Simba | Simon | Simone | Sinatra | Sinbad | Sinead |
| Sirloin | Sissy | Sizzles | Skeeter | Skipper | Skippy |
| Slider | Slim | Slinky | Slither | Sloane | Slobber |
| Smidgen | Smidget | Smokey | Smoochy | Smudge | Smuggler |
| Snickerdoodle | Snickers | Sniff | Sniffles | Snip | Sniper |
| Snoopy | Snort | Snow | Snowball | Snowbell | Snowflake |
| Snugglepuss | Snuggles | Soapy | Sobers | Socks | Socrates |
| Solomon | Sonic | Sonny | Sooty | Sophie | Sorrel |
| Spaghetti | Spanky | Spar | Sparkle | Sparkplug | Sparky |
| Speed Bump | Speedy | Spencer | Sphinx | Spice | Spider |
| Spindle | Spinner | Spinoza | Spirit | Splash | Splotch |
| Spookums | Spooky | Sport | Spot | Spotty | Sprinkler |
| Spud | Spunky | Sputnik | Squeak | Squealer | Squirt |
| Starbuck | Steel | Steffi | Steg | Stella | Stellita |
| Sterling | Steve | Stevie | Stimpy | Sting | Stinger |
| Stockard | Stoli | Stone | Storm | Stormy | Stratus |
| Strider | Stripes | Stripey | Strudel | Strut | Stuart |
| Subaru | Sue | Sugar | Sugar Ray | Sugarfoot | Suki |
| Sumo | Sundance | Sunny | Sunset | Sunshine | Susan |
| Suzu | Suzuki | Suzy | Svetlana | Sweep | Sweetie |
| Sylvester | Sylvia | ||||