Based on available information, the exact number of cats Isaac Newton owned is unknown, but it's likely he had none.
While popular culture often associates Isaac Newton with owning cats, particularly due to the myth that he invented the cat flap, there's no contemporary evidence that Newton ever owned a cat. In fact, some of his biographers stated explicitly that he never owned any pet in his adult life. He spent time on a farm as a boy, but was so uninterested in farm work, he was deemed unsuitable for it.
Here's what we know:
- Lack of Primary Sources: There are no credible historical documents from Newton's time that mention him owning cats.
- Biographical Accounts: Some biographers explicitly state he did not own pets in his adult life.
Therefore, although a popular myth claims he owned cats, no evidence can confirm it.
