In Lewis Carroll's Through the Looking-Glass, Alice is warned about dangerous creatures like the Jabberwock, the Jubjub bird, and the Bandersnatch. These fictional animals symbolize caution and the perils that might lie ahead in her adventures, emphasizing the need to stay alert and wary of the strange world around her.
The quote serves as a poetic warning, capturing the whimsical yet unsettling tone of Carroll's imaginative universe. It reminds readers to be cautious of unfamiliar and possibly threatening beings while exploring new and fantastical realms.