1. Greg's Fear of Being Alone: Greg's anxiety about being the only one who doesn't have a summer job early on foreshadows his eventual awkwardness and isolation when everyone else is busy and he's stuck at home.
2. Rowley's Enthusiasm for the Pool: Rowley's constant talk about the pool and his excitement about getting a membership foreshadows his eventual role as the one who introduces Greg to the "cool" summer activities, leading to their adventure at the pool and the subsequent drama.
3. Greg's Interest in "The Cheese Touch": While seemingly a silly plotline, Greg's fascination with the "Cheese Touch" and its accompanying rumors subtly hints at his growing fear of being ostracized by the other kids. This fear later becomes a significant factor in his interactions with the popular kids at the pool and his struggle to fit in.
4. The Recurring Theme of Heat: The oppressive heat and the constant mention of the scorching sun foreshadow the overall theme of the book: the relentless summer and its impact on Greg's social life and emotional state.
5. The "Cheese Touch" Ending: The way the story ends with Greg, Rowley, and the other kids seemingly becoming friends despite the "Cheese Touch" foreshadows the possibility of a more positive change in Greg's social standing, leaving a glimmer of hope for his future.
Overall, the foreshadowing in "Dog Days" is subtle and often tied to Greg's internal anxieties and insecurities. It adds layers to the story and allows readers to anticipate certain events while also appreciating the humor and relatable experiences that define the book.