Here's why:
* Lactose Intolerance: Most adult cats are lactose intolerant. They lack the enzyme lactase needed to digest lactose, the sugar found in milk. This can lead to digestive problems like diarrhea, gas, and vomiting.
* Nutritional Imbalance: Cow's milk is not nutritionally balanced for cats. It lacks essential nutrients like taurine, which is vital for their heart and vision.
* Potential for Obesity: Milk can be high in fat and calories, contributing to weight gain and obesity in cats.
What to give your cat instead of milk:
* Fresh water: This is the most important thing for your cat's hydration.
* Cat-specific milk: There are commercially available cat milks formulated for adult cats that are lactose-free and nutritionally balanced.
* Yogurt (plain, unsweetened): Small amounts of plain, unsweetened yogurt can be a good source of probiotics for your cat, but make sure it's lactose-free or low in lactose.
Note: If you notice any signs of digestive upset after giving your cat milk, stop immediately and consult your veterinarian.