Hey Shaikh, 

Sorry to disappoint you but AIIMS (All India Institute Of Medical Sciences) do not offer MSc in Zoology course, but it offers other subjects MSc course for which you can try in the college, like :

• Anatomy
• Biochemistry
• Biophysics
• Pharmacology
• Physiology
• Perfusion Technology
• Reproductive Biology
• Clinical Embryology
• Nuclear Medicine Technology

Other top colleges for pursuing MSc in Zoology are :

• Jawaharlal Nehru University 
• Banaras Hindu University 
• Hyderabad University 
• St Stephen's College 
• Miranda House  
• Ramjas College 
• St. Xavier's College 
• Indian Institute of Technology 

Good Luck!