I was looking out of the bedroom window, wondering how a new ‘tricycle lane’ had been built in the garden without me noticing. A small girl on a pale blue tricycle was struggling to drive through the muddy flower beds. As I watched, I saw a squirrel leap onto the mudguard and hold his paws out to help another squirrel on board. The second squirrel performed two perfect somersaults before landing perfectly.

I was irritated, but impressed.