Strict tag list – user should choose only existing tags for posts

While selecting tags for the posts the user is able to create new tags on fly.

For example we have the tag ‘animal’ but the user misstpye it as ‘aminal’ – and WordPress creates it.

In our blog the strict tag structure is essential. How can I disable this function?

Edit

Solution added.

YOu can deactive the default tag feature and add via plugin an custom taxonomie, that only list your created tags, like category meta box. Its also possible to design this how the tag meta box.