A horse's legs announce trouble early if you know where to look and what to feel. The hoof and lower leg have little soft tissue to hide swelling or heat, so changes there are honest signals, and they sort neatly into two phone calls: structural hoof problems belong first to the farrier, while pain, heat, swelling, and sudden lameness belong to the veterinarian, with some signs needing both. The costly mistake is waiting a week to see whether a hot hoof or a filled leg settles on its own, because many leg problems in horses are far easier to address on day one than on day seven. Daily hands-on checks during grooming turn these signs into things you catch, not things you stumble over.
Hoof Signs That Point to the Farrier
Call the farrier when the problem is the hoof capsule itself and the horse is moving comfortably. Cracks that lengthen, deepen, or reach the coronary band, a wall that flares and starts to chip away, and a loose shoe that clicks when the horse walks are farrier territory. So is a hoof growing unevenly, toes running long, or heels underrunning between appointments, because those change how the leg loads. A horse that comes up mildly foot-sore in the days right after a trim, with no heat or swelling, is also a farrier conversation first, since the trim itself is the likely context. Describe exactly what you see, which foot, and how fast it is changing, and ask whether the shoeing interval should shorten rather than simply booking the next routine slot.
Signs That Mean the Vet, Not Just the Farrier
Several hoof and leg signs should go straight to the veterinarian. A hoof that feels noticeably hotter than its pair, especially with a strong, throbbing digital pulse you can feel at the back of the fetlock, signals active inflammation inside the foot. Sudden lameness at any grade, a horse pointing a front toe or rocking back to unload the front feet, or reluctance to turn in a tight circle all warrant a vet call the same day. A dark, foul-smelling discharge at the frog, a puncture anywhere in the sole, or bleeding from the hoof is urgent, and a nail driven close during recent shoeing followed by worsening soreness should be reported to both professionals at once. Do not work or ride a horse showing these signs while you wait; rest in a clean, dry stall is the right holding pattern.
Leg Signs Above the Hoof to Take Seriously
Above the hoof, swelling is the headline sign in a horse's leg. A tendon or ligament area that fills, feels warm, and makes the horse flinch when you run a hand down it is a vet call, particularly after hard work or a misstep. Both hind legs stocked up after a night in the stall that walks off within minutes is a common, lower-grade pattern, but one single swollen leg, or swelling that lingers and comes with heat, is not. Cuts over joints, however small, deserve prompt veterinary advice because joints sit close to the surface at the knee, hock, and fetlock. Also report a horse that starts resting the same leg constantly, standing camped out or camped under, or dragging a toe at the walk, since posture changes often precede visible lameness.
What to Note Before You Make Either Call
Farriers and vets both triage faster when your report carries specifics instead of a general worry. Record which leg and which part of it, when you first noticed the sign, whether the horse has been trimmed or shod recently, and what work it did in the days before. Note whether the horse is bearing weight, eating normally, and bright, because a leg problem paired with a dull, off-feed horse raises the stakes considerably. Filing those dated leg notes, trim appointments, and photos in the horse's KinsLe Pet Passport keeps farrier and vet working from the same history instead of two partial memories.