General and systemic states of animals are involving multiple causative factors like temperature, shock, dehydration, etc.

General terms for disease are latent period (incubation period), prodromal period, period of manifestation, outcome of the disease, recovery, relapse, complications, convalescence, sequele, and death.

Treatment means the knowledge of pharmacology or adopting remedial measure for treatment of disease. The aim of the treatment is to attain the sick animal and to bring it back to its normal state of health. General care and nursing are very much important for rapid recovery of a diseased animal.

Prognosis is the forecast of the probable duration and outcome of the disease. Prognosis may be graded as favorable, doubtful, poor, guarded and grave.

Symptoms of various diseases in animals are described here. Animals like dogs, cats, large animals, etc. exhibit various symptoms in disease conditions, and these are used to reach a confirmative diagnosis and treatment.

The classification of diseases in animals is based on various parameters, and it is explained in this post in more detail.