Delightful Theory - Tumblr Posts
The books that have wildcats - Mossflower, Lord Brocktree, and High Rhulain (and a bit of Redwall itself), LB and MSF take place before the abbey is founded.
Redwall takes place after those two and there's only Julian left.
So they died out on the mainland, but Green Isle is so isolated, it still has a loch ness monster expy - something from the dinosaur age and wildcats who didn't get killed because they didn't go anywhere.
So Green Isle is an island stuck centuries in the past but we can't really tell outside of it's residents bc the world as a whole isn't technologically advanced. It also ties into the fact that there's a direct mention of Kaltag's family being domesticated cats 'by something'.
It's basically this series’ version of a prehistoric setting untouched by time.
That's clever!