Great Dane health makes most sense when you start with scale. A giant, deep-chested dog who grows quickly and carries great weight on long bones places unusual demands on the stomach, heart, hips, limbs and neck, and that single fact organises almost everything a vet watches for in this breed. The sections below move from the one true emergency every owner must recognise instantly to the slower, screenable changes that reward early reporting, so you can tell what needs a clinic today from what belongs in a planned conversation.
The Emergency: Gastric Dilatation-Volvulus
Gastric dilatation-volvulus, often called bloat, is a stomach that fills with gas and twists on itself, and in a deep-chested breed like the Great Dane it is the condition to learn first. The signs are distinctive: retching that produces nothing, restlessness and pacing, drooling, looking at the belly, and an abdomen that feels tight or looks distended. This is not a wait-until-morning picture. Go to an emergency clinic immediately and phone ahead on the way, because the twist cuts off blood flow and time decides the outcome. Discuss prevention honestly with your vet, including feeding routines and a surgical option some owners of deep-chested breeds consider at neutering; that decision belongs in a clinic conversation based on your individual dog.
Heart Screening: Dilated Cardiomyopathy
Dilated cardiomyopathy is an enlargement and weakening of the heart muscle. A vet screens by listening for rhythm changes or a murmur and may arrange heart imaging or rhythm monitoring where indicated. At home, report fainting, coughing, faster breathing at rest, tiring sooner on familiar walks, or a Dane who seems unsettled at night. Because early heart change can be silent at home, routine screening has real value in this breed even when your dog looks athletic and keen; the result from one year becomes the comparison point that makes the next year's check meaningful. Ask your vet how often screening should repeat for your dog's age and findings, and keep each rhythm result even when it is normal, because a documented normal baseline is exactly what makes a later change recognisable as a change rather than a guess.
Bones and Joints: Hips, Osteosarcoma and Wobbler Syndrome
Hip dysplasia involves a hip joint that does not sit snugly in its socket, and in a dog of this weight the signs are hard to hide for long: stiffness after rest, bunny-hopping with both hind legs, reluctance on stairs, or a narrowed hind stance. Your vet assesses hips by examination and imaging, and weight control is a genuine lever an owner holds, since every extra kilo loads a joint that already fits poorly.
Osteosarcoma is a bone cancer that a vet considers when a large-breed dog has persistent limb lameness that does not settle with rest. Watch for lameness in one leg lasting beyond a short rest period, swelling or a firm lump over a long bone, pain on handling the leg, or reluctance to bear weight. Those signs always deserve imaging rather than another week of watching, whatever the eventual finding turns out to be.
Wobbler syndrome involves the neck part of the spine and shows as a wobbly, uncoordinated gait, scuffed front or hind toes, uneven nail wear, and stumbling, sometimes with neck discomfort. A neurological examination is the vet's starting point, with imaging discussed from there. Hypothyroidism completes the list: an underactive thyroid that can bring weight gain, low energy, coat thinning and dry skin, screened for through blood work when the picture fits. Across a dog this size, dated heart results, hip imaging, lameness notes and thyroid values build the record a referral vet needs, and KinsLe stores that record in its Pet Passport so it reaches every appointment complete.