Unfortunately, like people, pets can develop diabetes (sugar diabetes - full name diabetes mellitus) and the problem is growing. It is estimated that as many as 1 in 200 pets suffer from this condition. Like us, it can be associated with getting older (cats and dogs over 6 years of age are most at risk), putting on weight and not being active. If left untreated, diabetes can cause serious illness in your pet and even premature death. However thankfully if diagnosed, diabetes is usually relatively easy condition to treat and manage in most dogs and cats.