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1、动物科学技术学院动物科学技术学院2020/6/12College of Animal Science and Technology,HZAU21.Body Structure of Dogs2020/6/12College of Animal Science and Technology,HZAU32.Dog body part measurement1-2.the height of withers3-4.the height of croup18-19.chest width2020/6/12College of Animal Science and Technology,HZAU43.t
2、he shape of dogs ears 3.1 The bat ear It is an obtuse triangular ear,with a wide root and a rounded tip,which looks like a bats ear.French bulldog is an example.2020/6/12College of Animal Science and Technology,HZAU5 3.2 The button ear It is twisted towards the skull from the middle,such as Italian
3、greyhound.The button ear2020/6/12College of Animal Science and Technology,HZAU6 3.3 The erect ear：It has two subtypes.One looks like a long pointed triangle,placed high on the head,like German Shepherd Dog.And the other subtype is cropped ear like a narrow-pointed triangle,as in the case of Great Da
4、ne and Boxer.The erect ear2020/6/12College of Animal Science and Technology,HZAU7 3.4 The semi-erect ear Its roots stand upright and its tips bend forward,like Rough Collie,and Shetland Sheepdog.The semi-erect ear2020/6/12College of Animal Science and Technology,HZAU8 3.5 The lop ear The whole ear h
5、angs down on the side of the head,such as poodle,pointer,pug,and Tibetan mastiff.The lop ear2020/6/12College of Animal Science and Technology,HZAU93.6 The rose ear Its tip flips backward revealing its inside part,which looks like a rose-petal,Bulldog is an example.The rose ear2020/6/12College of Ani
6、mal Science and Technology,HZAU104.the shape of dogs tail2020/6/12College of Animal Science and Technology,HZAU115.The dogs teeth5.1 They have two pairs of sharp pointed teeth5.2 The number of teeth 28 deciduous teeth,the tooth types 3103/3103 42 permanent teeth(the long-headed dog),the tooth types
7、3142/3143 38 permanent(the short-headed dog),the tooth types 3141/31422020/6/12College of Animal Science and Technology,HZAU12Agethe dogs teeth1928daysthe incisor teeth will appear2 months all deciduous teeth will grow1012 monthsall permanent teeth are in2 years oldthe lower incisors apex is smoothe
8、d3years oldthe upper incisors apex is smoothed45 years oldall incisors begin to wear away,slightly inclined and yellowish10 years oldteeth began to fall off15 years oldTeeth fall out Age is judged by the dogs teeth：2020/6/12College of Animal Science and Technology,HZAU136the basic types of dogs6.1 t
9、he Mastiff Type Such dog has big,round or square head,with a short muzzle,thick and long lip,and obvious nasofrontal angle.It is big,strong,and powerful.2020/6/12College of Animal Science and Technology,HZAU146.2 the Wolfhound Type It has a tapered rectangle head,extended muzzle,a moderate nasofront
10、al angle,thick lips,and upright ears.It has a body proportion,and agile body.2020/6/12College of Animal Science and Technology,HZAU156.3 the Greyhound Type It has a long and also taper-shaped head,a narrow skull,and small ears.It has a long muzzle,powerful jaw.It doesnt have obvious nasofrontal angl
11、e,and nose protrudes from the mouth.It has beautiful limbs,with a slender body.2020/6/12College of Animal Science and Technology,HZAU166.4 the Pomeranian Type It has a wolf-shaped head and broad skull,and the ears are small and upright.It is short and sturdy,with long hair,and a tail that curves tow
12、ard the back.2020/6/12College of Animal Science and Technology,HZAU176.5 the Pointer/Hound Type It has prismatic head,wide muzzle,and large,long and drooping ears.It has strong body.2020/6/12College of Animal Science and Technology,HZAU186.6 the Dachshund Type It has a rectangular and long body,with short legs and drooping ears.2020/6/12College of Animal Science and Technology,HZAU19Thats all for the lectureThats all for the lectureThank you!Thank you!