Questions to Ask Before Buying a Cow: A New Owner Checklist

Start with the basics: How old is the cow, what is her breed or cross, and what is she being used for now? A family milk cow, bred beef cow, feeder steer, and bottle calf all come with different care needs and risk profiles. Ask for the animal’s identification number, breeding dates, calving history, milk production history if relevant, and whether she has ever had dystocia, mastitis, prolapse, chronic lameness, pinkeye, pneumonia, or repeated digestive problems.

Then ask for records. Useful records include vaccination dates, deworming history, pregnancy diagnosis results, previous treatments, test results, and any movement paperwork. If the cow is crossing state lines, interstate movement rules commonly require official identification and a Certificate of Veterinary Inspection, and some categories of cattle have additional requirements. For lactating dairy cattle moving interstate, USDA APHIS has maintained HPAI-related movement requirements, so your vet and state animal health officials should be involved before transport.

A healthy-looking cow can still carry herd-level risk. Ask whether the source herd has a known history for Johne’s disease, bovine viral diarrhea persistently infected status, bovine leukosis, Salmonella Dublin, contagious mastitis, and other diseases important in your area. Cornell’s cattle biosecurity guidance notes that testing alone does not remove all risk, so health history, source-herd information, transport planning, and post-purchase isolation all matter.

If the seller cannot provide a clear herd health history, that does not always mean you should walk away, but it does mean you should slow down. Talk with your vet about a prepurchase exam and whether testing is appropriate for your goals. For example, a single family milk cow may raise different concerns than a bred replacement heifer entering a dairy or cow-calf herd.

If you are buying a female represented as bred, ask when she was exposed, to what bull or semen, and how pregnancy was confirmed. Rectal palpation, ultrasound, and blood testing are all used in cattle, but the timing and reliability differ. Ask whether the due date is estimated or confirmed, whether she has calved before, and whether there were prior calving problems.

If you are buying a dairy cow, ask about current and previous milk production, somatic cell count history if available, mastitis episodes, teat injuries, and milking routine. If you are buying beef cattle, ask about weaning weights, body condition, disposition in the chute, and whether the animal has been accustomed to your intended feeding and pasture system.

Before the cow arrives, make sure your property is ready. Cattle need secure perimeter fencing, safe gates, dependable water, shade or shelter appropriate for your climate, and a handling plan for hoof trims, vaccinations, pregnancy checks, and emergencies. Cornell Small Farms notes that many operations rely on pumped water to troughs and that electric fencing setup and grounding need to be done correctly to work well.

Also ask whether you can meet the cow’s daily feed needs year-round. Pasture quality changes with season, and hay, minerals, and supplemental feed may be needed. A cow that looked affordable at purchase can become difficult to maintain if your forage supply, winter feeding plan, or storage space is limited.

The purchase cost is only one part of the decision. New cow pet parents should budget for a prepurchase exam, transport, official ID or paperwork if needed, quarantine supplies, fecal testing or bloodwork if recommended, vaccines, deworming or parasite monitoring, minerals, hay, hoof care if needed, breeding or pregnancy diagnosis, and emergency veterinary care.

A practical first-year health setup often includes a farm call plus exam, basic vaccines, parasite-control planning, and pregnancy diagnosis or reproductive evaluation when relevant. In many US areas in 2025 and 2026, a routine large-animal farm call and exam may run about $100-$300, basic vaccine costs may add roughly $20-$60 per head depending on products and handling, and pregnancy diagnosis may add about $5-$20 per cow plus visit fees. Your local cost range may be higher in areas with limited large-animal veterinary coverage.

A prepurchase exam does not guarantee future health, but it can reduce surprises. Merck Veterinary Manual notes that the exam should assess the current health and condition of each body system and may include additional testing when indicated. For cattle, that can mean evaluating body condition, eyes, mouth, heart and lungs, udder or scrotum, feet and legs, skin, manure consistency, and overall soundness.

This is especially helpful for first-time buyers, because subtle lameness, poor udder attachment, chronic respiratory noise, bottle jaw, rough hair coat, or signs of previous injury may be easy to miss during a casual visit. Your vet can also help you decide whether the animal is a good fit for your goals rather than trying to make a diagnosis from photos or seller descriptions alone.

If you are seriously considering a cow, line up your support team before money changes hands. That means your vet, a feed supplier, and if needed your state animal health office or brand inspector for movement and identification questions. Ask the seller for records in writing, request a prepurchase exam, and plan a 2- to 3-week isolation period after arrival.

A thoughtful purchase is rarely the fastest one. The right questions help you protect your new cow, your existing animals, and your budget while giving you a much clearer picture of what care will look like after the trailer door closes.