Charles, I find that very few writers do multiple viewpoints well. Some books to study, Splendors and Glooms by Laura Amy Schlitz; Tale of Despereux by Kate di Camillo; Zel by Donna Jo Napoli. These are all older books but the multiple viewpoints work. Also, these are all amazing authors to read and learn from.
Remember that often, less is more. Not knowing everything can add to the tension. Of course, the opposite is also true, when a reader knows something that a character doesn't, it can also intensifies suspense. If you are in the early stages of crafting your story, don't worry too much about these things--get the first draft down. Then, when you are revising, you can decide how you want to reveal the events as they unfold. Sometimes, it's the dog's viewpoint that's the best.