How big is a cat brain?

5 centimeters in length and 30 grams.

larger than humans.

Four: Lion, tiger, Leopard and Jaguar. These four cats belong in the same genus Panthera, and are the only true big, or "great" cats.

Only lions live in prides and they can get quite large (approximately 30 cats) but typically consist of less than ten or fifteen individuals, including cubs.

This is from wikipedia: The term big cat - which is not a biological classification - is used informally to distinguish the larger cat species from smaller ones. One definition of "big cat" includes...