- “Olivia”
- “Pansy”
- “Olive”
- “Otto”
- “Oscar”
- “Paris”
- “Patty”
- “Opie”
- “Patches”
- “Panda”
- “Onyx”
- “Opal”
- “Oliver”
- “Peaches”
- “Patrick”
- “Peaches”
- “Paddy”
- “Paige”
- “Pricella”
- “Payton”
- “Princess”
- “Posey”
- “Poncho”
- “Punkin”
- “Parker”
- “Peaches-N-Cream”
- “Pumpkin”
- “Petula”
- “Prudence”
- “Putunia”
- “Puddin”
- “Pendleton”
- “Precious”
- “Peony”
- “Porter”
- “Peepers”