Category
Basic
Description
The goal of this research is to determine whether the characteristics of dog hair can effectively differentiate between canine breeds, which is important for forensic applications. While there is extensive literature on human hair analysis, there is not much to be found on canine hair, although dogs are present at many crime scenes. This research ultimately aims to gather sufficient data on a wide range of dog breeds to compile a comprehensive database to identify differences in dog hair, contributing to the discipline of trace evidence hair analysis within forensic science. The central hypothesis in this study is that specific medullary patterns, medullary structures, cuticle patterns, and other distinctive features in guard and fur hair can be used to identify canine breed from an unknown hair. Preliminary research has analyzed hair from breeds such as Black Mouth Cur, Blue Heeler/Border Collie mix, Dachshund, Pug, and miniature Schnauzer. Characteristics like color, texture, length, presence of ovoid bodies, medullary features, and appearance under a polarizing microscope are recorded and considered. The methods of analysis include using both a polarizing light microscope and a comparison microscope alongside a compound microscope to visualize and examine these traits of canine hair. From the canine hair obtained by donations, 10 samples are taken and analyzed to earn a representative view of the dog breed’s specific hair characteristics. Also, cuticle casts are prepared to evaluate the cuticle differences between breeds. Current findings show differences in medullary qualities even between guard and fur hair from the same animal. Future research hopes to study enough breeds to see significant differences in hair features and expand the growing database. Additionally, a quantitative approach will be explored by documenting hair shaft diameters, medulla diameters, and height of cuticles.
Forensic Differentiation of Canine Hair
Basic
The goal of this research is to determine whether the characteristics of dog hair can effectively differentiate between canine breeds, which is important for forensic applications. While there is extensive literature on human hair analysis, there is not much to be found on canine hair, although dogs are present at many crime scenes. This research ultimately aims to gather sufficient data on a wide range of dog breeds to compile a comprehensive database to identify differences in dog hair, contributing to the discipline of trace evidence hair analysis within forensic science. The central hypothesis in this study is that specific medullary patterns, medullary structures, cuticle patterns, and other distinctive features in guard and fur hair can be used to identify canine breed from an unknown hair. Preliminary research has analyzed hair from breeds such as Black Mouth Cur, Blue Heeler/Border Collie mix, Dachshund, Pug, and miniature Schnauzer. Characteristics like color, texture, length, presence of ovoid bodies, medullary features, and appearance under a polarizing microscope are recorded and considered. The methods of analysis include using both a polarizing light microscope and a comparison microscope alongside a compound microscope to visualize and examine these traits of canine hair. From the canine hair obtained by donations, 10 samples are taken and analyzed to earn a representative view of the dog breed’s specific hair characteristics. Also, cuticle casts are prepared to evaluate the cuticle differences between breeds. Current findings show differences in medullary qualities even between guard and fur hair from the same animal. Future research hopes to study enough breeds to see significant differences in hair features and expand the growing database. Additionally, a quantitative approach will be explored by documenting hair shaft diameters, medulla diameters, and height of cuticles.
