I think I'm having a problem problem understanding tags vs. categories.
Lets say that I have 4 pages on wordpress. (just giving an example here) they are named home (the default homepage), dog, cat, and fish. I make post about dogs playing with cats and I want the blog post to automatically go into both the dog and the cat pages as well as the homepage where i'd like it to display all the posts. How do I do this? Right now I have a dogs page and I made a category named "dogs" and put the post into that category but its only showing up on the homepage and not in the "dogs" page.
FYI. My pages are not actually "dog", "cat", etc. Just giving an example to try and make it easier!