a quick-moving critter with snapping jaws and an extensible neck

A swift moving creature with snapping jaws. Capable of extending its neck. (From The Hunting of the Snark)

The Bandersnatch is a fictional creature mentioned in Lewis Carroll's poems Jabberwocky and The Hunting of the Snark. The form or size of the creature is not described. Nor is it clear whether Bandersnatch is singular, like Phoenix.

Bandersnatch was a home computer "mega-game" written by Imagine Software intended for release on the ZX Spectrum. The game was eagerly anticipated by teaser adverts placed in the computer press (see right) throughout 1984. The game would have set a new price point for computer games (£30 vs. the standard rates of the time of between £5.95 and £11.95) and would have required a dongle, presumably to carry extra ROM for data.

a wolf-like animal that usually lives in the northern areas of the world but can roam almost anywhere