What is the correct way to post a change to the original topic?

[emmagirl]

My first post is titled

Emma New member Post

and there were replies by admins and my replies to their replies.
I want to make a new post with a different topic (my response to some information posted) Should I keep all of my posts under the initial thread that I started the very first time I posted? Do I start a new topic? Post a new thread? I'm forum illiterate!

[lulusmom]

Yes, we like to keep every dog's complete history in one thread so if the new topic still relates to your pup, then please post in the original thread. If you would like to change the title of your thread, please let us know how you want it to read and we can make that happen for you.