Question

did isaac newton invent the cat flap

Answer 1

 yes, the development of the cat flap is commonly ascribed to Sir Isaac Newton. He is said to have come up with the thought of the cat flap after his cat kept opening the entryway to his obscured research facility in this way letting in light and running a few photosensitive tests he was running. Isaac Newton cut a little cat-sized gap in his entryway and hung a few dark cloth over it and so the cat flap was invented.