Here's a bit of information from the AKC as far as dogs are concerned (to become AKC recognized). It's not too in-depth, but it's a starting point.
http://www.akc.org/press_center/facts_stats.cfm?page=8
The following information comes from a Bengal breeder's website. Maybe similar rules apply to new breeds and other organizations... I honestly have no idea, but I think it's cool. The information I posted below the link is from the site, so go there for more Bengal history/info.
http://www.lakemountainbengals.com/i...d=10&Itemid=71
Bengal cats are recognized as a breed by TICA. F1-F3 are recognized as "foundation bengals" and are considered hybrids. To be able to participate in TICA-sanctioned shows, the animal must be four generations removed from their nearest, wild Asian Leopard Cat (ALC) ancestor.
Note: SBT means that the animal has three generations of Bengal to Bengal breeding in its pedigree.
(ALC) Asian Leopard Cat + (SBT) Bengal = F1 Hybrid
(SBT) Bengal + F1 Hybrid = F2 Hybrid
(SBT) Bengal + F2 hybrid = F3 Hybrid
(SBT) Bengal + F3 Hybrid = F4 Bengal (SBT)
(SBT) Bengal + F4 (SBT) Bengal = Bengal (SBT)