
What do F1 and F1B mean?
They're generation labels. F1 means the first generation of a cross between purebred parents of different breeds, and breeders add a B, for backcross, when that first generation is bred back to one of its parent breeds.
- F1 Cavapoo. A Cavalier bred to a Poodle, so about half of each.
- F1B Cavapoo. An F1 Cavapoo crossed back to a Poodle, so about three quarters Poodle.
These letters aren't official, so they mean what the breeder says they mean. A good question for any breeder, us included, is which parents sit behind the label on a particular puppy. The family tree is also only half the story, because the genes each puppy actually inherits are dealt fresh every time.




