In many stories, a dog’s reaction to a new suitor tells the reader (and the protagonist) everything they need to know. If the dog doesn't trust the new boyfriend, the readers know he’s probably the villain! 3. Popular Tropes in "Dog-Centric" Romance
The Paws of Fate: How Dogs Shape Romantic Fiction and Stories
Shared concern for a sick pet often breaks down the walls between two guarded characters, creating an immediate emotional bond. 2. Dogs as Emotional Anchors