The spelling of the word "piedog" is quite simple once you understand the phonetic transcription. It is pronounced as /ˈpaɪ.dɒɡ/ - "pie" as in the dessert and "dog" as in the animal. The "ie" in "pie" sounds like the "i" in "tide" and the "o" in "dog" sounds like the "o" in "hot". "Piedog" may refer to a specific breed of dog, or simply a dog with a coat of mixed colors. In any case, now you know how to spell it correctly!