Brian the Build Bunny ownz those Watership Down rabbits
Unlike many animated features, the film faithfully emulated the dark and violent sophistication of the book. As a result, many reviewers took to warning parents that children might find the content highly disturbing.
Anyway, back on topic (me? digress? nevah!) ... hop on over and check out Martin's post unveiling the glory that is BtBB. The YouTube video is well done and far less likely to cause nightmares :)
Brian is a Nabaztag smart rabbit. He reads out details of check-ins and builds. If a build has failed then his ears go down to show how sad he feels, but if you fix the build his ears will soon pick up again.