Let's get straight into it, here are the most common reasons you may find your dog hobbling about on three legs:Â Â
Injury to ligaments or tendonsÂ
Common injuries of tendons and ligaments in dogs include Achilles tendon rupture and cranial cruciate ligament rupture. Â
Your pup might have stepped on a piece of glass or a stone. They may have a thorn or grass seed embedded in their paw. Any sort of foreign material that enters the skin will cause a ‘foreign body’ reaction which can include painful inflammation and possibly infection. Â
Dogs can experience inflammation in their joints. This is known as degenerative joint disease or osteoarthritis. When arthritis occurs, joints become stiff and painful, this can cause your dog to limp.  Â
Your dog may have cut, burnt, or scraped their pad. This is a very sensitive area and even a small injury can cause a great deal of discomfort.Â
Dogs can break the larger bones in their legs or the smaller ones in their paws. Some broken bones are very obvious and others can be really difficult to spot and need X-rays, CT, or MRI scans to identify.Â
Often dogs can pull muscles, which can cause limping. It’s commonly seen in more active dogs.Â
Any sort of wound from trauma can cause pain and lead to limping. Wounds will have bruising around them and be painful to touch.Â
Infections cause swelling and inflammation. Any infection in the bones, joints, and soft tissues caused by bacteria, viruses, or fungi can be very painful for your dog. They can cause them a lot of grief, leading them to limp. Tick-borne infections can cause lameness too. Â
Sometimes called a joint luxation, this occurs when the bones that usually form a joint are separated. It can be extremely painful. Â
This can include elbow dysplasia, osteochondritis dissecans (OCD) of the shoulder joint, hip dysplasia, and patellar luxation. These can all progress to be painful and cause limping. Â
Cancer can affect many different parts of your dog's body including bones, soft tissues, and joints. Â
Any sort of disease that affects the nervous system can affect movement and coordination resulting in lameness.  Â
Insect bites or stings Â
Curious dogs always having adventures will often get bitten or stung on their legs by insects. Â
Some diseases such as autoimmune or immune-mediated polyarthritis (IMPA) can cause lameness in your furry friend. Â