Hi :] im sorry but i think all breeds are equally likely to get cancer. However, there are many other diseases that a dog can get and you can look on dogbreedsinfo.com for a list and description of many dog breeds. Personally I recommend getting an Entlebucher Sennehund. I have one and i cannot imagine a dog any more perfect. :]
At least two years old and not until it has received a certification either in competition or by performing a recognized job applicable to it's breed, health clearances showing it to be free of hereditary issues such as hip and elbow dysplasia, inherited eye diseases like cataracts and progressive retinal atrophy, inherited cardiac issues, and thyroid-auto immune problems.
If you are looking for any dog that has the least risk of congenital, developmental or inherited diseases, your best bet is to get the most hybridized cross-bred mutt you can find - your goal should be a dog that even a veterinarian or a shelter worker can't figure out what breeds went into that dog. Every pedigree breed has a list of diseases that members of that pure breed are more likely to get or are more likely to develop. By getting a cross-breed, and preferrably a third generation or further multiple-breed cross-breed or mutt, you reduce the risk of the genes associated with disease from any one breed will be dominant enough to actually cause the disease. However, this is a probability statement, not a guarantee of risk absence - all dogs, regardless of pedigree and breed background, will have some inherited predispositions to disease that can either be managed or be neglected. Also, dogs are susceptible to a wide variety of infectious diseases as well as acquired diseases like diabetes, which are related to lifestyle.
At least a year. Wait until the 2nd heat cycle to breed them to decrease risk of death of health problems.
Generally small dogs tend to have fewer health problems than larger dogs but they still have what tend to be genetic problems. Most purebred dogs are going to have more chance of genetic problems... if you want less chances of genetic and health problems look for a good mix that fits your lifestyle. The cross breeding tends to breed genetic issues out.
No placental mammal should be bred from until she is skeletally mature so you should not breed from a jenny until she is at least five years old, otherwise you could cause her health problems and shorten her life.
Each breed of dog can have certain health problems, so choose your breed to not only suit your lifestyle, but a breed with the least amount of health issues. For instance, Bull Dogs or any dogs with pushed in noses can have breathing problems to heart problems. German Shepherds or any breed with a low slung hind end can have hip dysplasia in the future. Daschunds are known to have back problems. West Highland Terriers and other breeds can have skin disorders and on and on it goes. If you keep up your pet's shots up to date; a good physical for your dog each year by your vet and love your dog, spend time with it, feed it a good variety of food and lots of water as well as walks and fun time together then you will generally have one healthy dog.
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Female dogs are not less likely to have health problems if they have at least one litter of puppies before being spayed. That is a common myth, but it is untrue. Spaying actually helps to prevent some health issues.
Since pugs have such a short snout they have a myriad of breathing issues not the least of which is shortness of breath. The pug bread also has a lot skin problems.
A dog should be at least 18 months old to ensure she has stopped growing and her body is able to handle having pups without robbing her of nutrients she needs to grow herself. Also she should only be bred, if you are an experienced breeder, with a dog whose lineage goes back 4 generations, with little to no known health problems. Its a good idea to have them CERA certified since a lot of small dogs are prone to eye problems. The point of breeding a dog is to improve the breed, not make puppies or money. Otherwise genetic problems and health defects will be passed on through the generations.
Just like with cows, a bull is culled based on conformation, temperament, fertility, health issues and breeding ability. A bull can be too old to breed when he's 5 yrs old or at least 15 years of age.
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