ABSTRACT
This chapter explains the animal forensic investigator to the basic tenets of blood pattern analysis. The professional organization for bloodstain pattern analysts, the International Association of Bloodstain Pattern Analysts (IABPA), was founded in 1983 and today has over 900 members worldwide. The Scientific Working Group on Bloodstain Pattern Analysis compiled a list of recommended terminology that the IABPA has adopted. Computer software has been developed to produce "virtual" stringing known as directional analysis of bloodstain patterns. Analysts must remain objective and open-minded when evaluating bloodstain patterns in a case. Wave cast-off is a smaller blood drop thrown from the parent drop upon impact. If there is an object closes enough to the blood source to receive the mist type spatter, the stains may be easily disturbed or destroyed with normal actions of investigators, depending on the nature of the surface. Capillary action is the principle at work in thin layer chromatography, where there is a solid and a mobile phase.
