A cow is a mature female and a bull an
adult male of a bovine family. A heifer is a female cow that hasn’t had a
calf yet. Cattle is the name for the whole “cow” family.
There are about 920 different breeds of
cows in the world. They were domesticated about 5,000 years ago. Cows
came to America with the Pilgrims.
Modern domestic cattle are believed to
belong to either the species Bos taurus (like Holstein, Brown Swiss,
Jersey and Guemsey), or the species Bos indicus which are humped cattle
like the Brahman. Some cattle are a cross between those two species.
The smallest type of cow is a breed
called Dexter, which was bred a small size for household living. Cows
can live 25 years. You can guess the age of a cow that has horns by
counting the number of rings on the horns.
Cows have almost total 360 degree
panoramic vision and are able to see colors, except red. They can detect
odors up to 5 miles away. Cows can hear lower and higher frequencies
better than humans.
Per day, a cows spends 6 hours eating and
8 hours chewing cud. A cow doesn’t bite the grass, but she curls her
tongue around it. A cow has no upper front teeth.
The average cow drinks about 30 gallons of water and eats about 95 pounds of feed per day.
A cow stands up and sits down about 14 times a day.
The mean gestation period of a cow is
between 279 and 290 days. The bond between a cow and her calf is very
strong and continues after the calf is fully grown. In non-commercial
herds, some cows will nurse their calves for up to 3 years.
A cow weighs about 1400 pounds. A 1000 pound cow produces an average of 10 tons of manure a year.
Cows are very social animals. They form
large herds and will bond to some herd members while avoiding others.
They “moo” and use different body positions and facial expressions to
communicate with each other.
A Holstein’s spots are like a fingerprint. No two cows have exactly the same pattern of spots.
A cow has one stomach containing four
digestive compartments: the rumen, reticulum, omasum and abomasum. The
rumen is the largest compartment and acts as a fermentation chamber. The
abomasum is last of the four and is comparable in both structure and
function to the human stomach.
Cows have cloven hooves. In galloping
through boggy places or in deep mud, cattle can run faster than a horse.
Their toes spread, and therefore their wide feet do not sink so deep as
do those of the solid-hoofed horse.