I don't really understand the chausie breed, it seems like a free for all any wild cat will do mix. I haven't exactly done a lot of reasearch on it, but the other day I did a search on "a chausie is..." because I was curious.
I found this off a breeder's website:
Depending on the breeder and cats used in breeding, chausies can get quite large. At Mandala Exotic Cats we have NEVER introduced any of the smaller breeds in our lines like the bengal, abyssinian or ocicat as these breeds have a tendency to throw smaller type cubs and will greatly reduce the size of the cats even in one generation. We have listened to the public and have always bred for SIZE and TEMPERMENT!!! So you may ask "What is the difference between a Chausie and a Jungle Cat Hybrid?"
A Jungle Cat Hybrid is the result of mating any domestic cat with a Jungle Cat(felis chaus). Different types of domestics are used depending on the breeder's preferences, priorities and desired outcome. As most people want "large" cats we here at Mandala choose to use large well tempered queens. Our desired outcome is to eventually produce a large (20-35 lb.) cougar or leopard appearing type of cat.
A Chausie is a Jungle Cat Hybrid also but is bred specifically to create a breed resembling the Jungle Cat(felis chaus) hence the name Chausie. Only certain types of domestics are allowed in the chausie breed. The Abyssinian being one for example. There is also no bob tailed breeds allowed in the Chausie breeding program.
When talking to breeders you will hear them mention hybrids as F1's, F2's, and so on. The "F"stands for "Filial" generation and the "1" means the generation the cat is from his or her wild ancestors. In other words if one were to mate a jungle cat with a domestic the offspring would be called F1's and would have 50% wild blood and 50% domestic. Now if you mated an F1 with a domestic the offspring would subsequently be called F2's and contain 25% wild blood and 75% domestic. Therefore F3's will usually have 12 1/2% wild blood and 87 1/2 % domestic. All F1 males are sterile and incapable of reproducing offspring. This is true of most F2 males also. Some F3 males are able to reproduce but are still not reliable. F1 Jungle Cat Hybrids and chausies are not to be confused with F1 Bengal hybrids. Most F1 bengals are hard if not impossible to litter train and most are extremely skittish and aloof. A properly reared chausie is quite the opposite.