I ran over an enormous rat on the towpath in Enfield a few weeks ago. Big bump, but rat appeared unbothered by the impact.
Also, there is a heron that all but lives on the towpath in tottenham. The people living in the most proximal flat feed it scraps, and have named it Percy.
There’s a colony of herons nesting on the island in the lake in Kelsey Park, so you see them all around the wider Beckenham area.
I saw a fox chasing a rat on Waterlink Way once, on my way to a forum drinks. #csb