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Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia

Since the beginning of domestication, the craniofacial architectures of dogs (Canis lupus familiaris) have changed and modified of a result of human intervention in natural selection. Fatal attacks in humans by dogs have highlight the importance of studying comparative anatomy in forensic science...

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Main Author: Bay, Jessie Ji Xi
Format: Project Paper Report
Language:English
Published: 2015
Online Access:http://psasir.upm.edu.my/id/eprint/83508/1/FPV%202015%2074%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/83508/
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spelling my.upm.eprints.835082020-09-29T04:28:57Z http://psasir.upm.edu.my/id/eprint/83508/ Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia Bay, Jessie Ji Xi Since the beginning of domestication, the craniofacial architectures of dogs (Canis lupus familiaris) have changed and modified of a result of human intervention in natural selection. Fatal attacks in humans by dogs have highlight the importance of studying comparative anatomy in forensic science to identify the specific dog breed involved in such an attack. Several studies described the biting forces for specific breeds, but thus far, no such investigation has been conducted in local dogs of Malaysia. Thus, the purpose of this study is to determine the skull dimensions and dentition to estimate and compare the biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia. Twenty skulls were obtained from male dogs (five from each different breed) that were disposed at the Post-Mortem Laboratory at the Faculty of Veterinary Medicine, Universiti Putra Malaysia. Skull dimensions were measured using a pair of Vernier caliper on defleshed-dried skulls. Bite forces were estimated using the lever model adapted from Kiltie, 1984. Increasing zygomatic width has a stronger correlation (p<0.01) with biting forces compared to skull length. Rottweiler has the strongest biting forces, compared to Dobermann and German Shepherd. The local dogs have the smallest zygomatic widths, thus the canine and molar biting forces are the weakest. Local dogs are relatively smaller (p<0.05) compared to the other three breeds in terms of skull dimensions and dentition; therefore resulting in the lowest biting forces. The present study revealed that each breed has a distinct skull dimension, dentition and biting forces comparable to other published reports. Due to the high variation observed among local dog in terms of body and skull sizes and overall appearances; future studies should include higher number of local dogs to establish a database of skull dimensions and bite forces which can be valuable information for Malaysian local forensics and crime investigators. 2015-03 Project Paper Report NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/83508/1/FPV%202015%2074%20-%20IR.pdf Bay, Jessie Ji Xi (2015) Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia. [Project Paper Report]
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Since the beginning of domestication, the craniofacial architectures of dogs (Canis lupus familiaris) have changed and modified of a result of human intervention in natural selection. Fatal attacks in humans by dogs have highlight the importance of studying comparative anatomy in forensic science to identify the specific dog breed involved in such an attack. Several studies described the biting forces for specific breeds, but thus far, no such investigation has been conducted in local dogs of Malaysia. Thus, the purpose of this study is to determine the skull dimensions and dentition to estimate and compare the biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia. Twenty skulls were obtained from male dogs (five from each different breed) that were disposed at the Post-Mortem Laboratory at the Faculty of Veterinary Medicine, Universiti Putra Malaysia. Skull dimensions were measured using a pair of Vernier caliper on defleshed-dried skulls. Bite forces were estimated using the lever model adapted from Kiltie, 1984. Increasing zygomatic width has a stronger correlation (p<0.01) with biting forces compared to skull length. Rottweiler has the strongest biting forces, compared to Dobermann and German Shepherd. The local dogs have the smallest zygomatic widths, thus the canine and molar biting forces are the weakest. Local dogs are relatively smaller (p<0.05) compared to the other three breeds in terms of skull dimensions and dentition; therefore resulting in the lowest biting forces. The present study revealed that each breed has a distinct skull dimension, dentition and biting forces comparable to other published reports. Due to the high variation observed among local dog in terms of body and skull sizes and overall appearances; future studies should include higher number of local dogs to establish a database of skull dimensions and bite forces which can be valuable information for Malaysian local forensics and crime investigators.
format Project Paper Report
author Bay, Jessie Ji Xi
spellingShingle Bay, Jessie Ji Xi
Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia
author_facet Bay, Jessie Ji Xi
author_sort Bay, Jessie Ji Xi
title Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia
title_short Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia
title_full Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia
title_fullStr Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia
title_full_unstemmed Comparison of skull dimensions and their respective dentition in relation to its biting forces in Rottweiler, Dobermann, German Shepherd and local dogs in Malaysia
title_sort comparison of skull dimensions and their respective dentition in relation to its biting forces in rottweiler, dobermann, german shepherd and local dogs in malaysia
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/83508/1/FPV%202015%2074%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/83508/
_version_ 1680322384505077760
score 13.211869

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