The Spider is only seen in the movie where it comes down from a web and proceeds to follow Mrs. Brisby in the owl's tree trunk. Mrs. Brisby is unaware that the Spider is behind her and is about to attack her.
Just when the Spider is about to attack Mrs. Brisby, the owl steps on it and kills it. If it wasn't for the Great Owl, the spider would have easily killed and ate Mrs. Brisby on the spot.
|The Secret of NIMH|
The Secret of NIMH | The Secret of NIMH 2: Timmy to the Rescue ("Bluthless" sequel)
Characters: Mrs. Brisby | The Great Owl | Jeremy | Nicodemus | Mr. Ages | Auntie Shrew | Justin | Jenner | Sullivan | Teresa Brisby | Cynthia Brisby | Martin Brisby | Timothy Brisby | Brutus | Jonathan Brisby | Farmer Paul Fitzgibbons | Mrs. Beth Fitzgibbons | Billy Fitzgibbons | Dragon | Miss Right | Jenny McBride | Cecil | Joseph Valentine | Muriel & Floyd