Does the woman say that your cat can do backflips? How to answer?

This is a humorous way of greeting and communication.

You can answer, "Sorry, my cat hasn't practiced backflips recently, but she has many other stunts, such as chasing a laser pointer, catching birds, snoring in bed and so on."

This kind of answer can make the other person feel that you are an interesting person, and at the same time, you can continue to expand the topic and make the communication more natural and pleasant.