Deciduous teeth (lat. decidere, to fall off, temporary), otherwise known as temporary teeth, baby teeth, milk teeth, or primary teeth, are the first set of teeth in the growth development of dogs, cats, humans and many other mammals.

Diabetes insipidus (DI) is a condition characterized by excretion of large amounts of severely diluted urine, which cannot be reduced when fluid intake is reduced. It denotes inability of the kidney to concentrate urine. DI is caused by a deficiency of antidiuretic hormone (ADH), also known as vasopressin, or by an insensitivity of the kidneys to that hormone.

Diabetes mellitus often simply diabetes (Greek: διαβήτης), is a syndrome characterized by disordered metabolism and inappropriately high blood sugar (hyperglycemia) resulting from either low levels of the hormone insulin (diabetes type 1) or from abnormal resistance to insulin's effects (diabetes type 2) coupled with inadequate levels of insulin secretion to compensate. The common symptoms are excessive urine production (polyuria), consecutive excessive thirst and increased fluid intake (polydipsia), and blurred vision.

Diabetes mellitus strikes 1 in 400 cats and a similar number of dogs.