There are many reasons. Here are a few.
- Neutering or spaying your puppy or kitten limits the likelihood your pet develops cancer, such as mammary cancer, prostate cancer, or testicular cancer.
- Spaying and neutering limits pet overpopulation.
- For some dog breeds, like french bulldogs and chihuahuas, pregnancy is dangerous.
- Spaying prevents life-threatening uterine infections called pyometras.
- Neutering drastically decreases humping and urine marking behavior.