Pets SE now has a separate chat room, specifically to discuss issues about dogs that require extended discussion. As there has been some extended discussions in comments over dog training theories, reputable sources and the like. So this way it won't clutter up the main chat, if people want to have in depth discussion.
It's a public chat room and is intended to be inclusive for all Pets SE users.
In response to an answer. This has nothing to do with the main chat room having the name the litterbox. The main chatroom is for pets SE.
As it is, one user has already requested that an extended discussion on the main chat be moved to a separate room (and rightly so).