Is it natural to drink milk from another species?

There are many practices that are unique to humans, such as cooking meals, driving cars and writing books; but humans are not the only species to consume the milk of another. All species instinctively seek out nutritious food. It is naturally innate and central to survival. Access to food for any animal is determined by their ability and intellect. For example, a vulture and a lion will both eat a gazelle but they use different skill sets to access it. Around 7,500 years ago, humans realised that they could milk certain animals to access a rich source of nutrients and this is how dairy farming began. Other animals don’t have the ability or intellect to milk another species but when they have access to milk, many will readily consume it. Typical examples of this are domestic cats and wild birds.