Transcript Dog

Dog
Classification
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.
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
Carnivora
Family:
Canidae
Genus:
Canis
Species:
C. lupus
Subspecies:
C. l.
familiaris and
C. l. dingo
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
Veins and arteries of
the canine head
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14.
1. Mandibular
2. Facial artery and vein
3.Ventr. Buccolabial br.
4. Lingual artery and vein
5. Ext. jugular
6. Frontoscutularis
7. Lateral frontal sinus
8. Medial frontal sinus
9. Rost. Frontal sinus
10. Nasal vestibular
11. Nasolacrimal ostium
12. Palatine rugae
13. Pars nasalis
14. Soft palate