Why you should spay/neuter your pet puppy.
There are many good reasons to spay/neuter your pet puppy. If you spay/neuter at the appropriate age, you lessen more health problems than you think. It will also make a happier, more consistent dog. Please remember also, most responsible breeders will have a time frame for the spaying/neutering of their puppies set in their contract. If you do not follow their requirements for spaying/neutering at the age the breeder sets forth, you may nullify your health contract with your breeder.
Spaying a bitch too early.
With females it comes down to incontinence and growth plate problems. If you spay a bitch early, before her first heat, (which could happen between 9 months to 18 months) you will be in fact spaying a puppy. A female puppy will not grow correctly as she was meant to structurally. You will be in essence changing how she will look when she does mature. Her head may not develop, her growth plates may not grow correctly which may cause orthopedic problems.
But, if you spay a bitch at the appropriate age as set forth by your breeder, you will not ever have to worry about your bitch becoming pregnant by every randy intact male within a 3 mile radius of your home, not to mention strays. You will not have to deal with bleeding twice a year all over your home, nor the mood swings some bitches have( just like PMS for us ). Spaying a female eliminates the possibility of uterine and ovarian cancer and greatly reduces the risk of breast cancer.
Neutering a male at the appropriate age will not take away anything he needs, no matter how much your husband might protest. You will have a much happier swissy boy if you do neuter him. Neutering your male will not take away from the size he will reach at maturity. You will reduce the chance of testicular cancer. You will also be happy when he is not crying all the time because there in a bitch in heat within 3 miles of your home. Neutering a male reduces the risk of both prostate enlargement and prostate cancer. Neutering also will make your pet more affectionate and less likely to roam, get in fights, or become lost. A neutered male is less likely to ever mark (spray urine) in your home. But, if you neuter too early, you may also create orthopedic problems because the growth plates need time to close before hormone levels decrease due to neutering.
In addition to saving lives, spaying and neutering can also drastically improve your pet's health and life expectancy. The idea that pets become fat or lazy when they are spayed or neutered is a myth. Sterilized pets lead healthier, longer lives.
An interesting, but wordy article is linked below.
http://www.naiaonline.org/pdfs/LongTermHealthEffectsOfSpayNeuterInDogs.pdf