Small-Herd Cow Health: Daily Checks and Early Illness Signs

Cattle are stoic to a fault. A cow can be running a fever, carrying a twisted stomach, or brewing pneumonia and still shuffle to the feed bunk and look, at a glance, like the rest of the herd. That flat affect is exactly why experienced stockmen do not judge health by whether a cow is standing. They judge it by three things they can read every single day: is she chewing her cud, what does her manure look like, and is she eating with the herd. When one of those slips, the clock starts, and cattle decline faster than most owners expect once the rumen shuts down.

For a small herd, whether you keep a couple of family milk cows or a handful of beef animals, the advantage you have over a feedlot is that you can actually look at every animal daily. Use it. A healthy adult cow chews cud for 7 to 10 hours a day, drops 10 to 12 well-formed manure pats, drinks 30 or more gallons of water a day (much more when lactating or in heat), and holds a rectal temperature of 100.4 to 102.8°F. Knowing those baselines is what lets you catch the animal that is off.

The Three Daily Vitals

You do not need to handle each cow every day. Most of this is done by standing at the fence with coffee and actually watching. The goal is to notice the outlier before she looks sick.

Rumination is the master signal. Cud chewing is a direct readout of a working rumen, and the rumen is the engine of a cow. When a cow stops chewing cud, something has interrupted that engine, and it usually happens hours to a day before she looks obviously ill. Get in the habit of scanning the resting herd: most contented cows should be lying down, jaw working in that slow figure-eight. The cow standing apart with a still jaw is the one to watch.

Bloat, Lameness, and Fever

Bloat is the emergency that kills fastest. Gas builds in the rumen faster than the cow can belch it, usually after grazing lush legume pasture (frothy bloat) or from a physical blockage (gas bloat). The upper left flank, the hollow behind the last rib, swells and goes tight as a drum. The cow quits eating, kicks at her belly, drools, and breathes hard with her neck stretched out. Severe bloat can kill within an hour, so this is a call-the-vet-now situation, not a wait-and-see one.

Lameness is best tracked with a simple locomotion score. Score 1 is a cow that walks flat-backed and even. Score 2 shows a slightly arched back only while walking. Score 3 is an arched back standing and walking with a shortened stride. Scores 4 and 5 show obvious favoring of a limb and reluctance or refusal to bear weight. Anything at score 3 or worse deserves a hoof exam for foot rot, a stone bruise, or an abscess, and score 4 to 5 warrants prompt help. Most cattle lameness lives in the foot.

Fever is worth confirming with a thermometer when a cow looks dull. Above 103°F points to infection, commonly pneumonia, a fresh-calving uterine infection (metritis), or mastitis. A temperature that has dropped below 100°F in a sick or down cow is more ominous than a fever, because it often means she is going into shock.

Weekly and Seasonal Records

Beyond the daily walk, a light weekly and seasonal routine keeps the herd healthy and your paperwork ready. Weekly, body-condition score each animal on a 1 to 9 scale (aim for most cows around 5 to 6) and check feet, eyes, and udders up close. Keep a running record of vaccinations, deworming, breeding and calving dates, and any treatment with its withdrawal time, which matters if you sell milk or meat. Cattle are large investments, and a good record turns a vet call from guesswork into a fast, useful conversation. VetGPT tracks cattle alongside exotic and homestead animals, letting you log weights, photograph a lame foot or a suspicious manure pat, set reminders for vaccinations and calving, and keep records any large-animal vet can read.

Common Questions

What is a normal temperature for a cow?

A healthy adult cow runs a rectal temperature of about 100.4 to 102.8°F, calves at the higher end. Above 103°F suggests fever and infection; below 100°F in a sick or down cow is a serious sign that she may be crashing. Heat and time of day can nudge a normal cow slightly higher, so measure in the cool morning when possible.

How can I tell if my cow has bloat?

Bloat shows as a swollen left flank that becomes tight and drum-like. The cow stops eating, kicks at her belly, drools, breathes hard with her neck extended, and may go down. Both frothy pasture bloat and gas bloat are emergencies, because severe cases can kill within an hour.

Why does rumination matter?

Cud chewing is the clearest window into a cow's health. A content cow chews cud roughly 7 to 10 hours a day and most of the resting herd should be doing it. When a cow stops, it is one of the earliest signs her rumen and her health are off, often before she looks sick any other way.

When should I call a large-animal vet?

Call without waiting for a cow that is down and cannot rise, severely bloated, straining to calve with no progress in 30 to 60 minutes, feverish over 103°F with dullness, passing bloody or black manure, or off feed and not chewing cud for over a day. Cattle decline fast once the rumen stops, so early calls save animals.