I think the cat was having fun playing. We’ve had cats and dogs play.
I used to have a house that you could walk in a circle and not run into a wall or door. We had a cat and a dog. Every morning the dog chased the cat round and round, until they were both exhausted and cuddled up together for a nap.
That’s probably true that the cat was having fun. I had a stray at one time that loved to play with my Yorkie puppy. I couldn’t even pet this cat. He was so feral. But the minute I brought the puppy home, Cooper just loved this cat. He would chew on the cat’s ears and pull on his tail playing tug of war. And the cat would cry because it hurt but he never stopped him. And he never used his claws on him. But they would Chase each other back and forth across the yard, first one in front than the other. This video reminded me of that except the pony and the cat never changed positions.