Board Thread:Lore Discussion/@comment-72.39.17.222-20131015195733/@comment-25109952-20131015200931

They are mentioned in The Argonian Account, Book Two.

"Puff Adders, with arms and legs. Seven feet tall, eight when they're angry."

Scotti reports seeing massive fangs, which was the first thing he seen. Their scales are pitch black.

And here is the wiki page.

Naga