Belgian Shepherds come in four varieties: 1  the Belgian Groenendael (longhaired black) 2  the Belgian Tervuren (longhaired fawn/mahogany) 3  the Belgian Malinois (shorthaired fawn/mahogany)  the Belgian Laekenois (roughhaired fawn)
Depression causes lack of appetite. The cat will be less active, sleep more, will be aggressive, easily irritable and sometimes extremely vocal. Depression may be caused by loss, lack of attention from the owner, hormonal imbalance or a disease. Depression can be treated with mild antidepressants.
Kidney, liver and heart disease can also reduce the appetite. In some cases, sudden loss of appetite occurs at an advanced stage illness, such as congestive heart failure or kidney failure. Psychological diseases including depression, anxiety disorder and schizophrenia can also cause sudden loss of appetite, particularly if symptoms of the underlying disease increase suddenly.