On what syllable does the stress fall in the word dog? - briefly
The stress in the word "dog" falls on the first syllable.
On what syllable does the stress fall in the word dog? - in detail
The word "dog" is a monosyllabic word, meaning it consists of only one syllable. In English phonetics, stress is defined as the relative prominence that a syllable has over adjacent syllables. Since "dog" is a single-syllable word, the stress naturally falls on this sole syllable. This principle applies to all monosyllabic words in the English language, where the stress is inherently placed on the only syllable present. Therefore, in the word "dog," the stress falls on the syllable "dog."