Heifer vs Cow: What’s the Difference Between Heifers, Steers and Bulls?

A heifer and a cow are not the same thing — and neither are steers, bulls, and calves. In cattle farming, each term has a specific meaning based on gender, age, and reproductive status.

A steer is a male bovine that has been castrated and is primarily for beef. A cow is a female that has had at least one calf. A heifer is a female that has not had a calf yet. A bull is an intact male used for breeding. If you’ve ever wondered what a heifer is, what a steer is, or how cattle, bulls and cows differ, this guide explains it all using real-life examples from our cow-calf farm.

Written by a fifth-generation cattle farmer with real-world experience raising beef cattle on a cow-calf farm. Originally published in 2015; updated in 2026.

If your new to cattle farming, you may think that the term “cow” covers all bovine animals, but it doesn’t. Here’s a quick overview of cattle terminology. These terms apply to both beef cows and dairy cattle .

Quick Comparison Chart

Term	Gender	Reproduction Status	Key Traits	Use
Bull	Male	Intact, fertile	Large, muscular, aggressive	Breeding
Steer	Male	Castrated	More docile, higher-quality beef	Beef production
Heifer	Female	No calf yet	Small udder, young	Future breeding cow
Cow	Female	Has calved	Udder developed	Beef/milk production

This chart and definitions explain how cattle are actually categorized on a working cow-calf farm like ours.

What is a Steer?

Farmers call a castrated male bovine a steer. They usually castrate male calves when they’re young to reduce aggression and improve beef quality. Farmers raise most steers specifically for beef production.

Steer vs. Cow?

A steer is a castrated male, while a cow is a female that has given birth. Steers are not used for breeding and they don’t produce milk. Most of the beef you eat comes from steers or heifers, not bulls.

Why are steers castrated?

There are two main reasons steers are castrated. First, bulls are aggressive and more difficult to manage, whereas steers are calmer and safer to handle. Second, since steers have lower testosterone levels their beef is more tender, better marbled beef. When testosterone is present in bull meat, the beef’s taste and flavor changes and becomes more gamey.

Jump to:

• Quick Comparison Chart
• What is a Steer?
• What is a Heifer?
• What is a Bred Heifer?
• What is a Cow?
• Heifer vs Cow: What’s the Difference?
• What is a Baby Cow Called?
• What is a Bull?
• What’s the Difference Between a Bull and an Ox?
• Do Cows Have Horns?
• Other Cattle Terms You’ll Hear (extended chart)
• From Farm to Plate: How long does it take to raise beef?
• Final Thoughts
• FAQ
• Join us!

What is a Heifer?

A heifer is a young female bovine that has never given birth to a calf. Age and size don’t matter — until she has a calf, she is a heifer. Once a heifer has given birth to a calf, she automatically becomes a cow.

What is a Bred Heifer?

A bred heifer is a heifer that is pregnant with her first calf. After calving, she is called a cow.

What is a Cow?

Farmers define a cow as a female bovine that has given birth to at least one calf. In everyday terms, cows are “moms.” Cows have fully developed udders, a smooth body shape with heavy shoulder muscles and little muscling around the hips, and a 9-month gestation period.

On a cow-calf farm, a productive, “good cow” is one that successfully raises a healthy calf every year.

Heifer vs Cow: What’s the Difference?

The difference between a heifer and a cow is simple: a heifer is a female that has never had a calf, and a cow is a female that has had at least one calf. Visually, heifers often have smaller udders than a cow, but looking at appearance isn’t always reliable.

What is a Baby Cow Called?

Farmers call a baby cow a calf. A female calf is a heifer calf. A male calf is a bull calf if we leave him intact or a steer if we castrate him.

On most cow-calf farms like ours, calves are born in the spring or fall. They nurse from their mothers for about six months. Then, we wean them once they reach about 500 lbs and they can effectively convert grass into nutrients.

What is a Bull?

A bull is a mature, intact male bovine that is capable of breeding. Bulls are the “dad” of the cattle world. On a cow-calf farm like ours, one bull can breed about 25 cows. Bulls are kept in a separate field from cows, except during breeding season.

Bulls are much larger and more muscular than other cattle. They have thicker necks, strong shoulders and a noticeable crest on their shoulders.

Bulls and Genetics

A bull’s genetics are critical to our future cattle herd. About 65% of the genetic makeup of a calf comes from the bull, not the cow. Like many cow-calf farms, we purchase our bulls from special bull auctions or farms that specialize in raising bulls. They provide detailed genetic information about each bull so that we have a good idea of the type of calf they will produce.

What’s the Difference Between a Bull and an Ox?

Both a bull and ox are male cattle, but they serve different purposes. A bull is an intact male used for breeding. An ox is a castrated malethat farmers train as a draft animal.

Do Cows Have Horns?

Yes — cows, heifers, steer and bulls can all have horns. Genetics and breed determine whether cattle grow horns, not gender. Some cattle are naturally hornless, which we call “polled cattle.” For example, Angus Cattle are naturally polled, and Longhorn cattle are horned.

Other Cattle Terms You’ll Hear (extended chart)

Term	Gender	Reproduction Status	Role on Farm
Bovine	Male or Female	Any cattle family member	Umbrella term for cattle
Bred Heifer	Female	Pregnant with first calf	First time mom, becomes a cow
Yearling	Male or Female	Around 1 year	Between calf and mature adult bovine
Bull Calf	Male	Intact, young male	Transition stage, becomes a future bull for breeding

From Farm to Plate: How long does it take to raise beef?

From conception to steak, beef production takes nearly three years

1. Cow is bred
2. Calf is born 9 months later
3. Calf nurses, then grazes for 12-16 months.
4. Animal is butchered around 1,100 lbs and beef is processed and packaged.

Hopefully, this helps explain why all farmers and cow-calf operations have a limited quantity of beef to sell. On our farm, we’re guesstimating 12+ months out how much beef buyers will want to purchase the following year. 

Final Thoughts

Understanding the difference between a cow, heifer, bull and steer makes it much less confusing when you’re talking to a farmer. In short, cows are the moms, heifers are the moms-to-be, bulls are the dads, and steers are the boys raised for beef.

FAQ

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Here are a few other blog posts you may like:

• Do Cows Have Teeth?
• What everybody ought to know about beef cuts
• Buying a Cow. How Much Beef Is It?
• 7 Steps to Grilling a Steak to Perfection
• How We Raise Our Grass Fed Beef
• Easy Beef Brisket Recipe (oven-roasted)
• The Best Farm Books for Kids

This post was originally published in 2015. It was updated in 2026.