Sadly, the number of unwanted adult and young animals that are euthanised each year in Australia is astounding. Castrating a male dog or cat and spaying a female also helps to prevent medical problems that may occur later in life.
Aside from having puppies and kittens, unsterilised females are more susceptible to mammary gland tumours (breast cancer) and uterine infections. Pyometra (infection of the uterus) is extremely common in un-sterilised female dogs and almost always requires emergency surgery. Having your pet spayed can eliminate both of these conditions.