After the cat is lame, one foot cannot touch the ground, and there is no wound. It may be caused by fractures, calcium deficiency, cramps, thorns, etc. It is best to carefully check the cat’s paw pads to see if there are any sharp edges. Small thorns, if there are thorns, the cat needs to be removed in time. If there are no thorns, it is best to take the cat to the pet hospital for examination to see if it is a fracture or calcium deficiency, and then carry out targeted treatment to avoid delaying the condition.