Together, the dairy cows in New Zealand make more than 16.5 billion litres of milk - that's a lot of milkshakes!
Dairy tankers collect the milk from every dairy farm and take it to the dairy factory where it gets made into all the great products we know and love plus heaps of other cool stuff.
In this video Rosie explores what happens to milk between the dairy tanker and the bottles of milk in stores.
