Legs Swollen and Hot in Dogs

Why are my dog legs swollen and hot?

What is Legs Swollen and Hot?

Unless your dog was recently sunbathing, developing hot legs is a sign that your pet may have a possible serious underlying condition that needs to be addressed. If your dog has hot or warm legs, he needs to be seen by a veterinarian. Often, swelling of the legs may be seen concurrently with heat and may be caused by:

  • Fever
  • Arthritis
  • Hypertrophic osteodystrophy
  • Osteosarcoma (bone cancer) 
  • Hygroma
  • Sprain

Why Legs Swollen and Hot Occurs in Dogs


Your dog’s normal temperature can range between 99.5F and 102.5F degrees. Your dog’s legs may feel hot if his temperature is higher than 102.5F. If your dog has a fever he may also have warm ears, lack of energy, anorexia, and shivering. A fever may be caused by an infected wound, ear infection, urinary tract infection, abscessed tooth, respiratory infection or ingestion of poisonous item (toxic plant, human medication, pesticides or chemicals).


Arthritis is a common joint disease in older dogs. However, it can occur in younger dogs with a genetic predisposition for arthritis. Arthritis can cause warm swollen joints, pain, stiffness and lameness. As the disease progresses your dog may develop joint deformities, exercise intolerance and lameness. 

Hypertrophic Osteodystrophy

Hypertrophic osteodystrophy (Metaphyseal osteopathy) is a bone disease in large breed growing puppies and causes swelling of the growth plates in the limbs. This is a very painful condition. Puppies with this condition may have fevers of 106 degrees. Both legs are usually affected. 

Osteosarcoma (Bone Cancer)

 Osteosarcoma is more common in large dog breeds in their middle age to senior years. Breeds more prone to osteosarcoma include Saint Bernards, Rottweilers, Great Danes, Golden Retrievers, Doberman Pinschers, Irish Setters and Labrador Retrievers. As the cancer progresses the limbs become swollen and hot to the touch. Dogs usually exhibit extreme lameness.


A hygroma is usually a non-painful, fluid-filled sac that can form on a dog’s joints. The hygroma can form due to repeated pressure on the joint, such as repeatedly lying on hard surfaces (concrete, tile, hardwood floors). If the hygroma becomes infected it becomes painful and warm to the touch.


Sprains can occur from trauma (vehicular impact, fight with another animal), physical activity (swimming, playing catch, hunting), or by jumping (off furniture or out of a car). Large and giant breeds are more prone to develop sprains. In addition to warm, swollen joints, your dog may limp.

What to do if your Dog is Legs Swollen and Hot

If your dog’s legs feel swollen or hot, or a combination of both, he should be seen by a veterinarian.  The veterinarian will want to know what symptoms you have observed and when they started.  He will perform a physical examination on your dog, which may include taking his temperature, checking the heart and respiratory rate, and palpating the limbs and joints.  The veterinarian may suggest a complete blood count, blood chemistry panel, urinalysis and x-rays of the limbs. If the x-rays are inconclusive, the veterinarian may recommend magnetic resonance imaging or a computed tomography scan. If the veterinarian suspects bone cancer he may recommend a bone biopsy.

Bacterial infections are usually treated with antibiotics. Patients with arthritis are treated with nonsteroidal anti-inflammatory medications (NSAIDs) and other medicine, to reduce inflammation and pain. Physical therapy, hydrotherapy, acupuncture and massage may be beneficial to an arthritic dog. 

Treatment of hypertrophic osteodystrophy is primarily supportive. The patient is prescribed pain medication, anti-inflammatory drugs and antibiotics. Dogs diagnosed with the condition are placed on strict rest and restricted activities. Dietary supplements and vitamin C may also be recommended. 

The most common treatment for bone cancer on a limb is surgical amputation. Chemotherapy and radiation treatments may also be recommended. 

Some hygromas are left in situ and cause no real problem to the patient. Hygromas that become infected may need to be surgically removed; skin grafting may be required to close the incision. Some veterinarians may choose to surgically insert a drain into the hygroma to allow for fluid drainage. 

For sprains, your dog may be prescribed anti-inflammatory and pain medications and will need to be strictly rested.

Prevention of Legs Swollen and Hot

Not all conditions can be prevented.  Arthritis can be worsened by obesity, so it is important to watch your dog’s caloric intake and keep them slim. Studies report that dogs spayed or neutered before one year of age have a higher chance of developing bone cancer.  Some sprains can be prevented by not over exercising or training your dog.  Hygromas may be prevented by providing your dog a soft bed. Annual wellness checks are always recommended; illnesses such as Hypertrophic osteodystrophy can be monitored and more positive results to treatment obtained with early diagnosis.

Cost of Legs Swollen and Hot

Bone cancer may cost $6000 to treat. Diagnosis and resolution of hygromas in dogs can range from $300 to $1800. Therapy for arthritis can cost up to $2500, depending on severity of the condition.

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Legs Swollen and Hot Questions and Advice from Veterinary Professionals


German Shorthaired Pointer





1 found this helpful


1 found this helpful

My pet has the following symptoms:
Swollen Lip
My dog recently ran away and came back, her lip is swollen and paw is bothering her. She was panting when she got back but she could have just been running a lot

Sept. 25, 2020

Answered by Dr. Michele K. DVM

1 Recommendations

Thank you for your question. I apologize for the delay in my reply, this venue is not set up for urgent emails. It would be best to have your pet seen by a veterinarian, as they can examine them, see what might be going on, and get any testing or treatment taken care of that might be needed.

Oct. 20, 2020

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Goldendoodle mini



8 months


3 found this helpful


3 found this helpful

My pet has the following symptoms:
Slight Limp And Favoring Hind Right Leg
My dog got his foot caught in the door 😭 He seems to be fine and putting weight on it most of the time but sometimes he limps a little and favors that foot. It’s been six hours and he still sometimes limps he want to jump and play but we’ve been trying to keep him as rested as possible. We’ve felt his paw and he doesn’t pull away we’ve even moved his joints and he doesn’t seem to mind. Should we take him to the vet and spend all that money 🙈🙈🙈

Sept. 12, 2020

Answered by Dr. Michele K. DVM

3 Recommendations

Thank you for your question. If he is putting weight on it, and doesn't seem painful, you may be able to monitor him at home for 24 to 48 hours and see if it gradually improved over that time. Resting him, and preventing active running or exercise will help. If he is still limping after 24 to 48 hours, or he suddenly won't put weight on it or is crying, then it would be best to have him seen by veterinarian. It may not be as expensive as you think, they may just need to examine him and see if he needs any medication. I hope that everything goes well for him and that he feels better soon.

Sept. 12, 2020

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