Did you know that half of all the tumors in female dogs are preventable breast tumors? Dogs develop breast cancer because they were not spayed before their first or second heat period. Intact female dogs are highly prone to developing breast tumors. In fact, they are seven times more likely to get breast cancer than a spayed dog. One out of four intact female dogs over 4 years of age will probably develop one or more breast tumors along the mammary gland chains. Half of all tumors are malignant and unfortunately, half to 75% of them will kill the dog by recurrence or spreading (metastasizing) to the lungs within one to two years.
My mother's unspayed show Newfoundland got pyometra at 4 years old. Very scary and had to be rushed into emergency surgery.
"Pyometra" is the life-threatening infection of the uterus which generally occurs in middle-aged to older female dogs in the six weeks following heat. The hormone "progesterone," which primes the uterus for potential pregnancy, does so by causing proliferation of the blood-filled uterine lining and suppression of uterine immune function. It is thus easy during heat for bacteria in the vagina to ascend to the uterus to cause infection. The uterus with pyometra swells dramatically and is filled with pus, bacteria, dying tissue, and toxins. Without treatment, the pet is expected to die. Despite her serious medical state, she must be spayed quickly if her life is to be saved.
THIS IS AN EXTREMELY COMMON DISEASE
OF OLDER UNSPAYED FEMALE DOGS!
PYOMETRA IS NOT SOMETHING WHICH "MIGHT" HAPPEN;
CONSIDER THAT IT PROBABLY WILL HAPPEN.
The older unspayed female dog has an irregular heat cycle. There is no end of cycling comparable to human menopause. If you still decide against spaying, be very familiar with the signs of pyometra. (These include loss of appetite, lethargy, vomiting, excessive thirst, marked vaginal discharge
The only behavior changes that are observed after neutering relate to behaviors influenced by male hormones. Playfulness, friendliness, and socialization with humans are not changed. The behaviors that change are far less desirable. The interest in roaming is eliminated in 90% of neutered dogs. Aggressive behavior against other male dogs is eliminated in 60% of neutered dogs. Urine marking is eliminated in 50% of neutered male dogs. Inappropriate mounting is eliminated in 70% of neutered dogs.