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...
| Main Author: | |
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| Format: | Project Paper Report |
| Language: | English |
| Published: |
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/83508/1/FPV%202015%2074%20-%20IR.pdf |
| _version_ | 1825951749349834752 |
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| author | Bay, Jessie Ji Xi |
| author_facet | Bay, Jessie Ji Xi |
| author_sort | Bay, Jessie Ji Xi |
| collection | UPM |
| 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. |
| first_indexed | 2024-03-06T10:34:39Z |
| format | Project Paper Report |
| id | upm.eprints-83508 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:34:39Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | 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] |
| 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 |
| 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_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_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_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 |
| url | http://psasir.upm.edu.my/id/eprint/83508/1/FPV%202015%2074%20-%20IR.pdf |
| work_keys_str_mv | AT bayjessiejixi comparisonofskulldimensionsandtheirrespectivedentitioninrelationtoitsbitingforcesinrottweilerdobermanngermanshepherdandlocaldogsinmalaysia |