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Dog

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Dog The domestic dog (Canis lupus familiaris and Canis lupus dingo) is a domesticated form of the grey wold, a member of the Canidae family of the order Carnivora. – PowerPoint PPT presentation

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Title: Dog


1
Dog
2
Classification
Kingdom Animalia
Phylum Chordata
Class Mammalia
Order Carnivora
Family Canidae
Genus Canis
Species C. lupus
Subspecies C. l. familiaris and C. l. dingo
  • The domestic dog (Canis lupus familiaris and
    Canis lupus dingo) is a domesticated form of the
    grey wold, a member of the Canidae family of the
    order Carnivora. The term is used for both feral
    and pet varieties. The dog may have been the
    first animal to be domesticated, and has been the
    most widely kept working, hunting, and companion
    animal in human history. The word "dog" may also
    mean the male of a canine species, as opposed to
    the word "bitch" for the female of the species.

These are a carnivorous species which can adapt
to a wide ranging diet such as meat but it can
also include vegetables and grains. A number of
common human foods and household ingestible are
toxic to dogs, including chocolate (theobromine
poisoning), onion and garlic (throsulphate,
sulfoxide or disulfide poisoning), grapes and
raisins, macadamia nuts, as well as various
plants and other potentially ingested materials.
Dogs were domesticated from gray wolves about
15,000 years ago. Dogs perform many roles for
people, such as hunting, herding, pulling loads,
protection, assisting police and military,
companionship, and, more recently, aiding
handicapped individiuals. Over the 15,000 year
span the dog had been domesticated, it diverged
into only a handful of landraces, groups of
similar animals whose morphology and behavior
have been shaped by environmental factors and
functional roles. Through selective breeding by
humans, the dog has developed into hundreds of
varied breeds, and shows more behavioral and
morphological variation than any other land
mammal. The typical lifespan of dogs varies
widely among breeds, but for most the median
longevity, the age at which half the dogs in a
population have died and half are still alive,
ranges from 10 to 13 years.
http//en.wikipedia.org/wiki/Dog
3
Skeleton of a Dog
1
12
11
10
3
2
4
6
9
8
28
13
27
14
23
24
29
15
22
30
16
31
5
7
17
9. Atlas 10. Axis 11. Cervical vertebrae 12.
Thoracic vertebrae 13. Lumber vertebrae 14. Wing
of Illium 15. Bod og ilium 16. Coccygeal
vertebrae 17. Ishium 18. Femur
26
  1. Maxilla
  2. Mandible
  3. Incisive bone
  4. Frontal bone
  5. Zygomatic arch
  6. Parietal bone
  7. Temporal bone
  8. Occipital bone

18
19
20
21
25
19. Tarsus 20. Metatarsal bones 21. Phalanges 22.
Tibia 23. Ribs 24. Costal cartilages 25.
Phalanges 26. Metacarpal bones
27. Humerus 28. Scapula 29. Radius 30. Ulna 31.
Carpus

4
3.
11.
2.
8.
1.
9.
4.
7.
6.
5.
1.Nasal aperture 2. Infraorbital foramen 3.
Maxially foramen 4. Fossa for lacrimal sac 5.
Orbit
6. Zygomatic process of frontal bone 7. Zygomatic
arch 8. External sagittal crest
9. Nuchal crest 10. External occipital
protuberance 11. Cranium
5
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6
6.
2.
7.
8.
9.
10.
1.
11.
5.
4.
3.
6. Tympanic bulla 7. Jugular foramen 8.
Paracondylar process 9. Hypoglossa canal 10.
Occipital condyle
1. Hard palate 2. Choanal region 3. Oval
foramen 4. Base of cranium 5. Forament lacerum
11. Foramen magnum
7
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8
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9
2.
3.
4.
Canine skull
5.
6.
7.
1.
8.
10.
11.
9.
13.
12.
1. Infraorbital foramen 2. Orbit 3. Zygomatic
arch 4. Temporal fossa 5. Parietal bone 6. Nuchal
crest 7. Nuchal surface
8. Occipital condyle 9. Tympanic
bulla 10.External acoustic meatus 11.
Retroarticular foramen 12. Retroarticular
process 13. Pterygopalatine fossa
10
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11
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12
Rostral view of a canine skull
1.
3.
2.
4.
5.
  1. Nasal bone
  2. Incisive bone
  3. Maxilla
  4. Zygomatic bone
  5. Mandible

13
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