21. (1) Notwithstanding anything to the contrary contained in any other law for the time being in force, no one, other than a registered veterinary practitioner, shall practise, or hold himself out as practising, the veterinary medicine or surgery. (2) Whoever, after the date fixed in this behalf by notification in the official Gazette by the Council, contravenes the provision of sub-section (1) shall be punishable with fine which may extend to Taka five hundred; (3) The provisions of sub-section (1) shall not apply to any person who performs any of the following acts, namely:- (a) Rendering to any animal first aid for the purpose of saving life or relieving pain; (b) destruction of any animal by painless method; (c) castration of any animal or caponising of any poultry or bird; (d) docking of the cattle or dog before its eyes are open; (e) amputation of the claws of a dog before its eyes are open; (f) inoculation or vaccination of any animal, poultry or bird