How Long Do Cows Live? Natural Lifespan of Cattle

Natural lifespan of cattle

The species’ natural life is long for a farm animal. With shelter, food and care, cattle commonly reach their mid-teens to about 20 years, and individuals in their mid-20s are not rare in sanctuaries and on small farms. Some references put the potential natural life as high as 25–30 years.

As cattle age, their teeth wear down, which makes grazing tough grass harder. Older cows also tend to have more joint and hoof problems and fewer calves. These changes, rather than one sudden “age limit,” are what eventually end a long life.

How long do dairy cows live?

A dairy cow has to give birth to produce milk, so she is usually bred for the first time at about 15 months and has her first calf at around 2 years old. She then gives birth about once a year, and each lactation (milking period) lasts about 10 months.

Milk production peaks in the first few lactations and then declines. On most commercial dairy farms in Europe and North America, cows are removed from the herd at around five years old, after two to four lactations, and sent for beef. The most common reasons are fertility problems, mastitis (udder inflammation), lameness and falling milk yield, not old age. Over a lifetime, a typical Holstein produces around 30,000 liters (7,900 US gallons) of milk.

How long do beef cattle live?

Most beef cattle are steers (castrated males) and heifers raised for meat. They usually go to slaughter at about 18 months to 2 years old, a few months to a year earlier or later depending on breed, diet and country. Veal calves are slaughtered much younger, at a few months old.

Breeding animals live longer. Beef cows that raise a calf every year on pasture are often kept until they are about 10–12 years old, and good breeding bulls may work for several seasons.

The oldest cow on record: Big Bertha

The best-known record belongs to Big Bertha, a cow from near Sneem in County Kerry, Ireland. She was born on St Patrick’s Day, 17 March 1945, and died on New Year’s Eve 1993, just three months short of her 49th birthday. Her breed has been given as either Droimeann, a native Irish breed, or Friesian.

Big Bertha held two Guinness World Records: oldest cow and most calves, with 39 offspring. She became a local celebrity, led the St Patrick’s Day parade in Sneem and helped raise around 75,000 Irish pounds for charity. By 2006 Guinness had dropped both categories from its book, so no later cow has officially replaced her. Her age is far beyond the normal range, and she is best seen as an exceptional individual rather than a guide to what most cows can expect.

What affects how long a cow lives?

Several factors shape how long an individual cow lives:

• Purpose. Whether a cow is kept for milk, beef, breeding or as a companion animal has the biggest effect, because most farm cattle are slaughtered long before old age.
• Breed and size. Hardy traditional breeds such as Highland cattle are known for long lives, and breeders report Highland cows that keep calving well into their teens. Very high-yielding dairy cows tend to have shorter productive lives.
• Living conditions. Space, good pasture, shelter and good hoof care reduce lameness and disease.
• Calving. Each pregnancy and calving puts strain on the body, especially in large-calved breeds.

How can you tell how old a cow is?

On modern farms in the European Union and the UK, every bovine animal is ear-tagged and registered with its date of birth, so its exact age is on record. Without paperwork, age has to be estimated from the teeth.

Cattle have eight front teeth (incisors), all in the lower jaw. A calf has small, temporary milk incisors. These are replaced by larger permanent teeth in pairs, from the center outward: roughly the first pair at about 2 years, the second at 2.5–3 years, the third at about 3–3.5 years and the corner pair at about 4 years. After that, age can only be judged from how worn and spaced the teeth are, which gives a rough guess at best.

How do cows compare with other animals?

Cattle live about as long as many other large domestic animals. Horses typically live 25–30 years, a little longer than cattle, while sheep and goats usually live roughly 10–15 years. Among wild relatives, the American bison lives about 12–20 years in the wild and the African buffalo about 12 years on average, with some reaching 20. For more about the species, see How many stomachs does a cow have? and How much does a cow weigh?.