9-year-old male Doberman, with a mass in the left tarsal area, that affects the bone with osteolysis. For months he has been intermittently lame of the left pelvic limb. The mass has increased in size.

2.5 months-old, male Spanish Water Dog. Previous history of parvovirus. Now he shows lumbar and joint pain. Physical examination: ambulatory paraparesis and fever.

A spinal, fore limbs and pelvic limbs CT scan was performed.

8-year-old female neutered crossbreed. History of progressive loss of mobility in the hindlimbs. Came to the emergency room with paraparesis and loss of deep pain perception.

5-year-old, American Staffordshire Terrier, male neutered, came to the emergency room after being run over by a train, with an open wound on the left cheek with exposure of the masseter muscles.