in the dark we see, in the black we run

I am currently experiencing "being driven crazy by vague memories of a children's book". Can anyone help me? (I've also cross-posted the below to whatwasthatbook.)

I'm looking for a book I had as a child (in the 90s), but was already quite old.

It was a collection of poems about various monsters/creatures, all of which were original to that book. It had a lot of non-colour line illustrations among the text.

I don't remember the names of any of the creatures, but there was a species rather like dragonflies but with six wings, one where the creatures were shaped like eggs and hopped on a singular leg, one which had large eyes and lurked at the edge of a park, and some massive sort of mammoth/elephant thing.

Anyone recognise any of this? Please feel free to suggest your own reward...