Spirochetosis in animals generally classified into Blood spirochetosis and Intestinal spirochetosis. Avian spirochetosis is an acute, febrile, septicemic, bacterial disease that affects wide varieties of birds.

Chlamydiosis or Psittacosis is a term used to indicate the disease in psittacine birds, humans and animals.

Mastitis (Mammitis) is an inflammation of the mammary gland. In which the milk undergo physical, chemical and microbiological changes where as mammary glandular tissue under go physical and pathological changes.

Colibacillosis (Scour in Ruminants) is caused by Escherichia coli. It is a normal inhabitant of the digestive tract of mammals and birds. The disease is usually sporadic and is more common in dairy than beef calves.

Ulcerative Lymphangitis (Big Leg) is characterized by the development of cutaneous form of pyogranulomatous abscess in subcutis, mastitis, internal abscessation, a necrotic and ulcerative dermatitis on the heel of the foot.

Leptospirosis (Rat Scratch Yellow Fever) is a potentially re-emerging, epidemic disease creates a public health problems.