Cats like milk mainly because of its fat and protein content, which they can smell and find appealing. Additionally, cats associate milk with positive early life experiences since kittens drink their mother's milk, making it a comfort food for them. The cold, fresh taste and familiar smell also attract cats to milk. However, most adult cats are lactose intolerant. As they grow, they produce less lactase, the enzyme needed to digest lactose in milk, which can cause digestive problems such as stomach upset, diarrhea, and gas if they drink regular cow's milk. Despite liking the taste, milk is not suitable for adult cats nutritionally and can lead to unwanted health issues if given regularly. Some cats, though a minority, can tolerate milk without digestive issues, but milk should not be a staple in their diet due to potential health risks like obesity and unbalanced nutrition. Water and specially formulated cat foods or milk substitutes are better options for hydration and nutrition. In summary, cats like milk because of its taste, fat content, and nostalgic association with kittenhood, but it is generally not good for them to drink milk as adults. They often develop lactose intolerance, making milk unsuitable for their adult diet.
