* Many breeds: There are hundreds of different breeds of cows. Some breeds are known for their spots, while others are solid colors.
* Spot patterns vary: Even within spotted breeds, the pattern and size of spots can vary greatly.
* No global cow census: There isn't a comprehensive count of all cows worldwide.
To summarize: We can't know the exact number of spotted cows, but we can say that many cows have spots, especially those belonging to certain breeds.