Robert Westall wrote a good children’s book called BLITZCAT. I remember thinking what a good movie it would make as I was reading it, until I came to the part where the cat, injured, survives on the scattered bits of meat found after a UXB squad member loses his saving roll. Figured that would be a bit problematic for film adaptation.
(Early in the war, members of unexploded-bomb units had about a three-week life expectancy.)