A system for observing and predicting a physiological state of an animal has bee provided. Said system comprising: a computer comprising a processor and being operatively connected to a database, at least one sample providing device for repetitively providing at least one sample of a body fluid of the animal, an analysis apparatus for analyzing the at least one sample, so as to obtain at least one sample value of at least one parameter of the body fluid, a data interface for repetitively entering the sample value of the at least one parameter in the database, wherein the database is adapted to store multiple database entries representing the sample value of the at least one parameter at various points in time, and wherein the processor is programmed to: perform at least one mathematical analysis of the at least one sample value, and selecting, on the basis of the at least one mathematical analysis, the point in time for providing a subsequent sample and performing a subsequent analyses of said subsequent sample for at least one of the parameters.
