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• Bone cancer in dogs | PDSA

  Osteosarcoma is a type of bone cancer. Osteosarcomas are painful tumours that often first appear as hot, solid, tender swellings. They are most common in leg bones, but can affect any bone in the body.

• Legg Calvé Perthes disease in dogs

  Legg-Perthes is a painful condition that causes the hip joint to crumble and collapse. Legg-Perthes affects young dogs and is most common in small breeds.

• Saddle thrombus (aortic thromboembolism) in cats

  A saddle thrombus is a blood clot that blocks blood supply to the back legs. Symptoms appear suddenly and include severely painful, paralysed back legs. A saddle thrombus is an emergency.

• Cruciate ligament damage in dogs

  If one of the cruciate ligaments is damaged the knee joint becomes wobbly and this is usually very painful. The most common way for a dog to damage a cruciate ligament is by jumping, skidding, twisting or turning awkwardly.

• Elbow dysplasia in dogs

  Elbow dysplasia is a painful condition of the elbow joint that most commonly affects large breed dogs. It causes swelling, pain and eventually arthritis.