Figure 1: A 14-month-old male beagle that displayed a sudden onset of lameness in the left hind limb.
From: Sudden onset of hind limb lameness in a 14-month-old beagle

There is hind-limb instability characterized by the dog displaying almost no weight-bearing on the left hind leg. Notice how the left hind paw (arrow) is carried and not touching the floor. On clinical examination, the dog was bright, alert, and responsive, and no apparent abnormalities or pain could be detected.