I once had two dear friends who, in turn, had a dog - a Dalmation named Casper. The dog, of course, like all well bought up dogs, thought it was human. They all used to walk together - the two humans and the dog - on the beach near our house.
Then, after a few years, things changed, as they do, life went on and careers flourished and..... a long, long time ago they all moved away.
Since then I believe they've had three human children. So this 'illustration' is for Casper, who by now has probably moved on to the after life - and discovered that he is really a dog after all.
And it's also for my friends' three children - imaginary or not.
What's the circus have to do with it? .....Good question.... give me a moment and I'll make up a story.