What is the difference between and F1 and F1B?

The F1 hybrid is the cross between the Poodle and the Labrador Retriever OR the Poodle and Golden Retriever. The resulting dog will be 50/50 Poodle and Retriever. In other words, an F1 Labradoodle puppy is 50% Labrador Retriever and 50% Poodle, and an F1 Goldendoodle puppy is 50% Golden Retriever and 50% Poodle.

The F1B is a ‘backcross’ meaning you take an F1 Goldendoodle puppy or F1 Labradoodle puppy and breed it ‘back’ to a poodle. This puppy is suppose to be 75 % poodle and 25 % lab however, that is not always the case. It depends what genes they inherit.