Becaue of cientific experiment, I univerity in 1989 ~ 1991 in Pari,northwetern univerity in the United State from 1997 to 1998, every month to coexit with a pig for a long time. My job i in making all kind of pig heart and the aorta ha yet to carry out the urgery.Our animal center of pig with ordinary pig, they are very lovely. They are collective captive in the large room, kipping played with, a if i till live in the cottage. Actually do more than the farmhoue here uch a "pig" : contant temperature, humidity, uv lamp and covered the ground broken awdut i one to two inche thick, the toilet i fixed in the corner. Small creature to take a bath every day, o they all fuzz regardle of black and white, i very bright and clean. Mot people think the pig i dirty and it i too wronged them. The pig i not only clean, it i till very heavy affection, i willing to be alone. If the technician will repectively in their own mall cage, or quota in pig, they become litle all day, unhappy. Every pig ear wearing a mall metal "id card", like a earring, above indicate that the pig,Whenever they withtand tet operation, and vitality to gulp down, we will be happy.