What are ideas for a book about dogs?

Answer 1

Any idea that is interesting enough to you will be a good idea. You cannot write a story or novel based on ideas that someone else invents - you won't be interested enough in the subject to be able to research and write anything that will actually sell.

If you want someone to tell you what to write, ask your English teacher for an extra assignment -- that's what you're doing here, you know. Plus, anonymous people on the internet have no idea how old you are, what your interests are, or how well you can write!

In order to write, you need a personal connection to the subject. Write about whatever you enjoy, or whatever you find interesting, and you will end up with your novel or story.