The handling of laboratory animals is clearly regulated. In addition to the legal requirements, we provide you with specific technical information, explanations and forms on this page. Animal experiments must be managed with the web application "animex-ch". Relevant information can be found on the subpage "animex-ch".

The 3Rs, the indispensable need and current best practice 

The 3R principles, the indispensable minimum according to article 137 of the Animal Welfare Ordinance and current best practice must be complied with each animal experiment. In particular, the smallest number of animals (3R principle: ‘Reduce’) and the least possible constraint (3R principle: ‘Refine’) are to be used. 

All experiments should be planned, performed and evaluated according to current principles of best practice. New scientific findings and improvements in methodology must be taken into account for each experiment. 

Further information on 3R may also be found on the page 3R – Replace, Reduce, Refine as well as on the page of the Swiss 3R Competence Centre (3RCC).

Technical information and explanatory notes on applications, authorisations, reports and announcements can be found under "Forms".

If the application cannot be accessed or authorisation procedures are transacted outside animex-ch the forms are available here.

Further technical information on selected topics can be found under "In detail".

Information on education and training events in the field of animal experimentation can be found in animex-ch and on the page animal experiments > Education and further training.

More information



Animal experimentation

Laboratory animal facility

Genetically modified lines or mutants with an impaired phenotype


English translations

English is not an official language of the Swiss Confederation. These translations do not correspond to the latest versions of the legislative texts. They are provided for information purposes only and have no legal force.

Last modification 01.12.2023

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