《宠物犬鉴赏宠物犬 (5).pdf》由会员分享，可在线阅读，更多相关《宠物犬鉴赏宠物犬 (5).pdf（8页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、动物科学技术学院动物科学技术学院2College of Animal Science and Technology,HZAU1.Dogs have an extraordinary sensory system Dogs can identify the location of their houses at any time2.Dogs have an acute smell A dogs sense of smell may be 10,000 times stronger than ours.Smell occupies a very importantposition in their
2、 life,It helps themidentify their owners,and knowthe sex,as well as estrus conditionof other dogs,Smell also helps themrecognize their relatives,and finddirection,prey as well as food.2020/6/123College of Animal Science and Technology,HZAU3.Dogs have acute hearing It is much better than that of huma
3、ns,up to 16 times.They can identify the density and characteristics of sounds,ranging from 80-90,000 Hz,while humans can only hear the sounds between 20 and 20,000Hz.4.Dogs have poor visual sense Dogs are born with color blindness Dogs can see various shades of gray Dogs are typically myopic,they ca
4、n see clearly a stationary target within 50 meters,but things in a further place are difficult for dogs,but they can identify moving targets even 850 meters away.Dogs have a wide vision2020/6/124College of Animal Science and Technology,HZAU5.Dogs have a rather dull taste they can hardly know the tas
5、te of food.It can be said that taste is out of smell,when we see dogs gobbling up food.6.Dogs thermoregulation Dogs dense hairs will be thermal-protective coating,the sweat gland of the sole to secrete more sweat,the evaporation of the respiratory tract,will help them regulate temperature.2020/6/125
6、College of Animal Science and Technology,HZAU7.eating habits Domesticated dogs are omnivorous animals and prefer eating meat8.Dogs have a developed emetic center After eating poisonous food,they can spit it out by vomiting.2020/6/126College of Animal Science and Technology,HZAU9.Dogs defecation cent
7、er is not that developed Dogs cannot defecate while walking,they have to stop to do that.so be sure to leave them some time,when walking the dogs.10.Dogs like to chew things they will feel uncomfortable when they are teething.they may want to attract your attention they are expressing their emotions
8、 they tear to leave a mark its a way to lay claim on their territory they may suffer from parorexia62020/6/127College of Animal Science and Technology,HZAU11.Dont touch their tails and buttocks Dogs dislike such behavior,but they will be happy,if you pet the head or back lightly.12.About the sleeping habits of dogs Dogs sleep for 14-15 hours each day it is a intermittent sleep Dogs always stay vigilant during sleep.2020/6/128College of Animal Science and Technology,HZAUThats all for the lectureThats all for the lectureThank you!Thank you!