Andrea Barna says...
In the movie, you see a sign 'Don't step on the mome raths', which points to these creatures. So they are supposed to be mome raths.
(They don't spell out words, they form an arrow)
Originally, in the book, they were a different kind of creature: a sort of green pig that has lost his way
Posted on December 7, 2010
In the Disney Alice in Wonderland, Alice is a path followings and she comes across thesis stick creatures That spell out words. What Are There Names?