Item size in cm L x W x H 5 6 x 3 6 x 3 8 Holstein cows are black & white bovines that chew the cud & chew & chew Holstein bulls & cows are the most popular breed of cattle in the world They were first bred in The Netherlands & then brought to America in 1857 Holsteins are immediately recognizable by their black & white coloring -- the stereotypical farm bull & cow Today farmers raise Holsteins for their amazing milk-producing ability the average cow produces 3 250 gallons of milk a year They live three to four years but some have been known to live much longer Cattle have four stomachs They graze on a combination of grasses & hay once the food passes through their first stomach it s called cud This cud gets pushed back into their mouth & the cattle chew on it all day until it is ready to go through the other three stomachs It almost looks like they re chewing gum Fun Facts A Holstein cow produces almost thirty-six quarts of milk per day