Who invented the pet door?
Correct answer: Isaac Newton
![Lunar](https://cdn.best-quiz.com/avatars/7.png)
Lunar
wow! good to know that😁
![Vickylawrence85](https://cdn.best-quiz.com/avatars/7.png)
Vickylawrence85
wow! no clue. these are getting harder.
![RED. HEAD](https://cdn.best-quiz.com/avatars/6.png)
RED. HEAD
I. AGREE. THEY RE. GETTING. HARDER. &. HARDER
![luckycatfay](https://p.cdn.quizzclub.com/ql/2019-05-04/b14f4e75bd8547c78ddaf7f4254fc7b6.jpg?v=2)
luckycatfay
SQinfoNUTS, you should follow your own advice and read a book or two
![SQinfoNUTS](https://cdn.best-quiz.com/avatars/6.png)
SQinfoNUTS
Which came first Kitty convenience or science?