Injury. Booklice feed on molds and will overrun cereals and similar materials that support mold growth. Their presence, therefore, is a nuisance and can render some foods unfit. The starchy paste of wallpaper and books also can support mold growth or may be attacked directly by booklice.
Hip dysplasia is caused by a subluxation in the hip joint. This creates abnormal wear and erosion of the joint and as a result arthritis and pain develop. The disease process is fairly straightforward; the controversy starts when we try to determine what predisposes animals to contracting the disease.
Following are some symptoms suggesting hip dysplasia: Decreased activity. Difficulty getting up from laying down. Rear leg pain. Reluctance to use stairs to go up. Reluctance to jump up or stand on hind limbs. Reduced range of motion. Bunny-hopping gait when running.