he Savannah, our No. 1 of the biggest cat breeds in the world, is again No. 2 in this list. This giant cat has a wild background, it’s a crossbreed between the wild serval cat and a domestic cat. Savannah’s are very active and playful and need lots of space, so owning a mansion before getting one of these cats might be a good thing. They are surprisingly easy in maintenance and their wild background makes them fond of water! The Savannah generations are indicated by F numbers, such a F1, F2 and F3. F1 is the closer to the wild serval cat, and F3 is closer to a domestic cat. The prices for a F1 Savannah can go up to $35,000.