| Name | Meaning | Gender | Origin |
|---|
| Othello | he has the sound of God | Male | Hebrew |
| Otto | Born eighth or wealthy
| Male | |
| Patches | | Male | |
| Pebbles | after the character in 'The Flintstones' cartoons | Male | |
| Pepper | A spice or condiment. | Male | Sanskrit |
| Pixel | | Male | |
| Pongo | One who smells. | Unisex | |
| Purdy | Variation on pretty. | Unisex | |
| Ralph | Red wolf
| Male | English |
| Ralph | Red wolf
| Male | English |
| Rufus | Red haired | Male | Latin |
| Scamper | | Male | Hebrew |
| Scout | One dispatched from main body to gather information | Male | Word |
| Skipper | Master of a ship. | Male | English |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smudge | A blotch or smear | Male | |
| Snicker | | Unisex | Hebrew |
| Snickers | A brand of candy bar. | Unisex | |
| Snickers | A brand of candy bar. | Unisex | |
| Snowball | | Unisex | |
| Socks | Short stockings finishing above the ankle | Unisex | |
| Sox | Short stockings finishing above the ankle | Unisex | |
| Sox | Short stockings finishing above the ankle | Unisex | |