Here's why:
* Lactation is controlled by hormones: While spaying removes the ovaries, it does not affect the hormones responsible for milk production (prolactin and oxytocin). These hormones are produced by the pituitary gland in the brain and are not dependent on the ovaries.
* Mammary glands remain intact: Spaying does not remove or alter the mammary glands, so they are still capable of producing milk.
Important Note: It's crucial to get your cat spayed before she becomes pregnant. Spaying after giving birth can cause complications and may not be possible in some cases.