The correct spelling of the phrase "dog footsteps of" is [dɔɡ ˈfʊtstɛps ʌv]. The first word, "dog," is pronounced with the /ɔ/ vowel sound, as in "father." "Footsteps" is spelled with a silent "e" at the end and pronounced with the /ʊ/ vowel sound, as in "book." The preposition "of" is pronounced with the /ʌv/ sound, as in "love." When combined, these words create a phrase indicating the sound of a dog's footsteps.