Let us look at a simple analogy; most people today have some experience in working on a computer. Similarly most people do not really understand the internal mechanisms (hardware) driving the computer, nor do they understand how the software programs interact with the hardware to produce the results that we all take for granted. However, software programs have many parts that are "hidden" by the program writers. This is because the user does not need to know all the information used to write the program. (Genetic code) As the user practices and becomes more experienced, they start to use information not readily seen or used by others. Some users will attempt to perform tasks on their computer for which it does not have the correct hardware or software, and of course will be unsuccessful. For example; if you only have a black printer, you cannot print color pictures. With software, your computer may actually have the required program but without the correct knowledge you may only access it by chance or accident.
So, how does this relate to breeding of dogs? Simply put, if you are trying to breed a brown and white dog, but the parents only have the genetic code (program) for black and white, you will be unsuccessful! If you are trying to breed dogs with a short nose, at least 1 of the parents must have the program (software) for short noses to provide any chance of success. In Saint Bernards, if you are trying to breed a short hair dog, at least 1 of the parents must have short hair! (Hardware) A grandparent, sibling or other relative with short hair is of no use to you!
Some traits can be hidden and accessed after 1 or more generations (software programs) while others have to be present every time (color printer). The more experience and theoretical knowledge you gain the sooner you can successfully operate your computer. The longer you work with your computer the more you will know about its software and hardware. Similarly the longer you work with a particular breed the more knowledge you will acquire about the hardware and software of that breed. Thus when you look at a pedigree you will be able to visualize the individual dogs, their qualities and perhaps additional information such as their dominant or recessive traits, what they passed on to their progeny, or other useful info.
To sum up this information we need to accept a few simple rules:
1) Good dogs are bred from good dogs.
2) You cannot achieve a specific trait in your puppies if that trait is not in the genetic code of the parents.
3) Trying to correct a fault by breeding that dog to the opposite will not produce a medium result; e.g. breeding a long nose dog to a short nose dog will not produce a litter of puppies with medium noses.
4) An average bitch bred to an average dog will produce some puppies better than herself and some puppies worse than herself.
5) Similarly, two champions bred together will produce the same set of results, but the average quality will be higher and the best puppy at least as good as the parents, but more likely better.
6) Your chances of breeding better dogs will be higher if you start by using good quality dogs in your breeding program.
7) A "lucky" good puppy bred from poor quality parents will be unlikely to produce a puppy as good as itself!
To summarize: If you are planning to breed with your Saint Bernard, buy the best bitch that you can afford. Exhibit her at breed shows to obtain other opinions regarding her quality. If she proves to be a good quality specimen, choose an equally good or better stud dog from the available dogs that are also exhibited at shows and arrange a mating once she is over 22 months old. Ideally you should also have her hips and elbows x-rayed for displasia before the mating takes place, but not before she is 22 months old.
See the following information to assist you in choosing a suitable stud dog: