The consensus from this post Should we have tags for breeds? is that when there's 3-4 posts on a breed that it would be appropriate to create a breed tag.
I created a german-shepherd and retagged the relevant posts with the breed. The breed tag should only be used if the breed is relevant to the post. For some questions the breed is incidental to the actual problem. I also created a pug as I'm aware there's pug questions, but only retagged the one when I added the german-shepherd tag. I didn't continue searching for pug questions or other breeds, as I don't want to flood the active questions with posts that have been edited by me.
I'm thinking three things:
1. Is it time for the community to look at adding breed tags?
While the question pool is still relatively small, it's easier to search on breed names in questions and retag them.
2. Should this be a community effort?
Do we want more than one person to be doing the retagging?
3. Do we create breed tags on new questions asked that are breed specific?
To save retrospectively adding the tag to questions as the site build?