1. A method of predicting whether a test treatment belongs to a class of test treatments having a pattern of animal behavior associated with said class of test treatments, said method comprising: (a) administering a test treatment to at least one animal; (b) using a computer to capture behavioral data of said at least one animal administered said test treatment; (c) using a computer to compare information derived from an analysis of the captured data from (b) with stored class signature information from a database comprising signatures associated with treatment classes to predict a probability that the test treatment is a member of at least one treatment class represented in the stored class signature information, wherein said stored signature information was obtained by: (i) collecting behavioral data from animals administered at least one known treatment which is a member of a class of treatments; and (ii) using a computer to define said signatures for said treatment class by correlating features of said behavioral data with said known treatment class member; and (iii) storing said signature information in a computer; and (d) outputting a result from (c) that is indicative of whether said test treatment is a member of at least one treatment class.