Here's the breakdown:
* All life on Earth shares a common ancestor. This ancestor lived billions of years ago and was a single-celled organism.
* Humans and cats are both mammals. This means we both evolved from a common ancestor that lived about 200 million years ago.
* Cats are more closely related to whales and hippos than they are to humans. This might seem surprising, but it's because mammals diversified a lot over millions of years.
* The most recent common ancestor of humans and cats lived about 85 million years ago. This ancestor was a small, furry creature that was likely active during the day.
So while we may not share a very recent ancestor, we do share a common ancestor from a very long time ago, and we both belong to the same group of animals - mammals.