If you don't intend to use your dogs for stud, it's best to get the male "castrated" and female "spayed". Here are the advantages :
1) Prevents spotting of blood in female dogs and urine spraying in female cats during heat periods.
2) Prevents females from attracting groups of male stray dogs while in heat.
3) Decreases the male's urge to spray urine to mark territory and to fight over females in heat.
4) Decreases embarrassing inappropriate mounting behaviour in male pets.
5) Reduces or eliminates irritable aggression of females in heat and dominance aggression.
6) Reduces tendency to roam or try to escape, thus reducing your pet's chances of becoming lost or injured.
7) Spayed females are not susceptible to life-threatening reproductive tract tumors, infection of the uterus, and complications from pregnancy.
8)Prevents enlarged prostate (occurs in 60% of older dogs); prostate tumors and infections in males.
Spaying removes the ovaries and uterus and thus eliminates the risk of ovarian and uterine infection or cancer. Bacterial infection of the uterus (Pyometra) is commonly recorded in older unspayed dogs. In its advanced stages, pyometra causes general illness and kidney failure. Pyometra required emergency spaying, which may save the animal. The best preventive care is to spay dogs and cats when they are young and healthy.
Spaying can also prevent mamary gland tumors, the most common tumor in unspayed female dogs and the thrid most common tumor in cats. A high percentage of mammary tumors are cancerous; in dogs nearly 50%; in cats nearly 90%. Once a cancerous mammary tumor spreads to the bones or lungs, the cancer will be fatal. An unspayed dog is more likely to develop mammary tumors than a dog spayed before
Neutering removes the testicles, which prevents testicular tumors and greatly reduces the risk of developing rectal tumors. A dog that develops a testicular tumor must be treated before the tumor spreads - the only effective means is neutering. Testicular tumors are especially prevalent in older dogs.
Enlargement of the prostate gland affects over 60% of unneutered male dogs older than five years. Prostatic enlargement predisposes a dog to prostate and urinary - tract infections, which can make urinating difficult and painful. If an infection leads to an abscess, the abscess must be surgically drained. Because prostatic enlargement is caused by the male hormone testosterone produced from testicles and hence neutering acts as both preventive and cure.
Additionally, by eliminating the sexual drive that can cause a dog to bolt from the yard or house, neutering helps protect dogs from injuries associated with roaming such as being hit by a car or infections transmitted by other animals.
Spaying prevents irritability and aggressiveness that some dogs exhibit while in heat. In indoor dogs, this also prevents vaginal blood spots on household furniture or the carpet.
Spaying prevents irritability and aggressiveness that some dogs exhibit while in heat. In indoor dogs, this also prevents vaginal blood spots on household furniture or the carpet. In many male dogs, neutering reduced or eliminates sexual mounting behaviour and territorial marking with their urine (that might take place in the house)