Answer:
Pronouns are words that function as nouns that can used by itself to refer to another noun in the sentence or a noun mentioned somewhere else in the speech. Whenever pronouns are used, the reader should clearly indentify which noun the pronoun is standing in for, to avoid confusion.
Some possible solutions to the unclear reference in the original sentence would be: We took pictures of Todd after Dad brought him back from the football game -if we want to make reference to Todd- or We took pictured of Dad after he brought Todd back from the football game -if we want to make reference to Dad.