* "Cats are" is a phrase that implies a common characteristic or behavior. For example, "Cats are independent" or "Cats are good at hunting." Sheep don't have a single defining trait that makes them universally known.
* Sheep are more often described by their function or role. They are known as flock animals, wool producers, or food sources.
So, instead of trying to find a phrase like "cats are...", you might say something like:
* Sheep are known for their soft wool.
* Sheep are gentle and social animals.
* Sheep are important to agriculture for their meat and wool.
Let me know if you want to explore any of these aspects further!