Hybrid Dog Breeds: What Does F1, F2, F3, F1b & F2b Mean?
Sep 26, 2015 · Multi Generation. Crossbred dogs and designer dogs are often referred to as F1, F2, or F3, or even F1b or F2b. It is just the accepted nomenclature in which we can distinguish hybrid dog breeds between the different generations. This naming standard in here applies for dogs, designer dog breeds, hybrids, and mixes, but it is also commonly (and scientifically) applied to cats, cattle, plants, …
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