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F1, F1b and all that Stuff


by Stacy Tejel

It can be confusing to read through the explanations of the different generations of breeding and cross-breeding trying to decide which is the best fit for your family. Hopefully, the following information will be of use. 

The Generations


The F1 generation is created by breeding two purebred (P) dogs of different breeds. For instance, when we breed a Poodle to a Bernese Mountain Dog the puppies will then be F1 Bernedoodles because while the parents are of different breeds, they are purely Poodle and purely Bernese Mountain Dog.


The F1b, the "b" stands for backcross.  Which means that in order to get an F1b puppy we need to breed an F1 dog back to a P or purebred dog that was of the same breed of one of its parents. This happens when we breed a Poodle to a Bernedoodle. The Poodle is a purebred dog but the Bernedoodle is a mix of Poodle and Bernedoodle, the F1b now, in theory, has more of the Poodle than the Bernese Mountain Dog exhibited in their genetics. 


For example, at Mt. Rainier Doodles our F1b puppies are a result of a cross between a purebred Poodle and a Bernedoodle.


The F2b generation occurs when we breed an F1 dog to an F1b dog. For example, if we breed a Bernedoodle whose parents were one Poodle and one Bernese Mountain Dog, we will have an F1 Bernedoodle. If we take that F1 Bernedoodle and breed it to an F1b Bernedoodle whose parents would be one Poodle and one Bernedoodle, then the puppies would be the F2b generation.

So, the F2b generation comes about when you breed and F1 dog to an F1b dog.


The F3 generation comes about from a breeding of two F2b parents. The offspring of the F2b dogs are considered F3 puppies.


This is a term you will also hear frequently and it just means that you are continuing to breed F3 parents to on another and you are getting multiple generations of the new cross breed. For example, breeding Bernedoodles always to Bernedoodles and never breeding them to any other breed of dog. This will give you multiple generations, F4, F5, once we pass F3 people generally refer to the dogs as "Multigen."

There are many factors that come into play in a good breeding program so it is not quite as important which generation you choose in regards to health and temperament of your puppy. A good breeding program looks at the big picture and breeds those dogs that are most likely to make a healthy, good-tempered companion. The interesting aspect of looking at the different generations of dogs is, for the breeder, to seek to enhance positive, healthy traits and to decrease or eradicate any possible health problems or personality traits that are not suitable for a companion dog, or not suitable to the dog's work responsibilities. This means that as we breed dogs in a multigenerational fashion we can watch how these traits manifest over time and be careful to breed the healthiest, best-tempered dogs. 

For the person purchasing a puppy the most important part of this equation is of course, health and temperament. However, once these factors are assured there is the aspect of shedding, coat, and coloring, all of which are also important to the new owner. 

F1 puppies will be a mix of the two pure breed parents so, the coat may be a bit less curly than an F1b puppy, that has more Poodle in it's genetics. However, the F1b puppy will, most likely, be more hypoallergenic/low-shedding, than the F1 puppy just because the F1b puppy has more Poodle in it's genetics. 

The F2b puppy would, hopefully, be an excellent mix of the two breeds, having just a hint more Poodle.

In theory, the F3 and multigens would be well on their way to creating a very specific breed type that could be replicated over and over. 

Which Generation Do You Want?

Don't forget, 


regardless of which generation the puppy is, there is never any guarantee as to exactly what color or coat type your pet will end up with. Also, your pet's hair will change over time, as the grow, mature, and age. We do our best to cover all the bases and produce beautiful, healthy, good-tempered dogs but coat color and density can be difficult to predict and breed for.

The information contained in this website is solely for informational purposes, and DOES NOT replace licensed professional veterinary care. The information contained within this pamphlet or on our website is subject to interpretation and an evaluation of an animal's medical condition should be performed by a trained professional before any medical decisions are implemented. We shall not be liable to any person whatsoever for any damages, or equivalencies, or by reason of any misstatement or error, negligent or otherwise obtained in any communication from Mr. Rainier Doodle Dogs.

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