Savannah Size and Generations

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There’s a common myth that Savannah cats are all large cats—but this isn’t entirely accurate. To help clarify, let’s explore how size and generational differences actually work within this fascinating breed.

Savannah cats are classified by generation, indicating how many breeding steps separate them from their wild ancestor, the African Serval. Early generations (F1–F3), often referred to as “hybrid” Savannahs, have a closer genetic connection to the Serval and are registered with TICA as Foundation Savannahs. From the F4 generation onward, cats can be designated as SBT (Stud Book Traditional), meaning their parents, grandparents, and great-grandparents are all Savannahs. This SBT designation signifies purebred status and reflects greater consistency in appearance, temperament, and overall breed quality.

F1s and F2 males are often considered some of the largest Savannahs due to their closer relation to the African Serval. However, size can vary greatly, and it’s not uncommon for an F1 or F2 to be smaller than a later-generation SBT Savannah. While males generally tend to be larger than females, individual genetics play a bigger role than generation alone. If size is a key factor for you, adopting an adult Savannah may be the most reliable way to know exactly how large your cat will be.

Many Savannahs, regardless of generation, are often about the same weight as an average domestic shorthair. However, their long legs, tall ears, and lean bodies give them an exotic and larger-than-life appearance. This can contribute to the misconception that all Savannahs are “big cats.”

Another myth is that an earlier generation (such as an F4 compared to an F7) will always be larger or have more Serval traits. In truth, a lower filial number does not guarantee a bigger cat. The focus should be on the individual look and structure of the cat and not the generation. Size, appearance, and Serval influence can vary widely—even within the same litter—because genetics don’t follow strict patterns. No generation can promise a specific look, size, or personality.

Once a Savannah reaches SBT status, the filial number (F4, F5, F6, etc.) becomes less relevant to most pet owners. All SBT Savannahs share the common trait of being bred exclusively from other Savannahs, and their differences lie more in individual personality and lineage than in generation number. For breeders, the filial number may have more relevance when it comes to fertility in males, as fertility tends to improve in later generations.

The one thing you can count on is that Savannahs, no matter the generation, are big in personality. From playful and loyal to clever and full of charm, these cats often exhibit dog-like behaviors and a unique spark that wins hearts. SBT Savannahs often thrive as family companions due to their social and interactive nature, while early-generation Savannahs can be more intense, focused, and independent—but no less captivating for the right household.

Each generation offers something special. Whether you’re drawn to the wild elegance of the early generations or the engaging and adaptable nature of the SBTs, there’s a Savannah cat to match nearly every lifestyle.

The pictures provided for this topic help to provide context on size with real-life Savannah cats.

-The top photo (from left to right) …British Shorthair, SBT, F3

-Bottom left pic …f3, f1

-Bottom middle pic …f5, British Shorthair, f3, f2

-Bottom right pic …f5, f3