The Dutch Belted is typically a dairy breed.
No. Gerts are a beef breed, not a dairy breed.
Charolais are the worst breed you can think of for dairy purposes! They are a beef breed, not a dairy breed. When they were originally developed they were used for milk, but they were found to be more suitable for being raised for beef and a draft animal than for dairy production. Charolais cows don't give much milk anyway.
Yes.
That all depends on the breed. Are you asking about a dairy cow or a beef cow, and what breed of dairy or beef cow?
Charolais is the best beef breed, and Holstein is the best dairy breed.
The black and white belted cows you will see on the related link listed below are a rare breed of Scottish beef cattle called Belted Galloway cows, or Belties.
A chicken is neither a dairy nor a beef breed; it isn't even any kind of cow. A chicken is a bird that has feathers and lays eggs. Cows don't have nor do any of that.
Holstein-Freisians belong to the Dairy breed group of cattle. Beef Friesians, kin to the milking Holsteins, are in the beef breed group.
Dual purpose means that the breed or type of cattle can be used for milking or raising beef cattle.
Beef and dairy.
Ayrshire and Guernsey are dairy breeds, while Brahman is a beef breed.
That all depends on her breed and her body type. If she typically looks thin and sports a large udder between her legs, then it's likely that she is a dairy cow. If she is more blockier, not quite as thin and sports a smaller udder, then she would be a beef cow.