Professor Started Class By Teling 2 Imp. Qualities As A Vet. Doctor.
1st is that, Never be Disgusted By Anything About Animal's Body E.G. He Inserted His Finger In Dog's Mouth and On Drawing Tasted It In His Mouth.Then He Said Them 2 Do the Same 

The Students Hesitated 4 Several Minutes. But Eventualy Everyone Insertd Their Fingers In Dog's Mouth and Then Tasted It.

When Every One Finishd, Professor Looked @ Them N Said: The 2nd Importnt Quality Is Observation. 

I Inserted My Middle But Tasted the Index Finger. Now Learn To Pay Attention... =P 
 

MORAL:Life Is Tough But Its Alot Tougher When U Are Not Paying Attention. =D