Are animals used for repetitive experiments?
The number of animals used in research has actually decreased by 40 percent since 1968. This is due, in part, to an increase in non-animal testing (i.e. computer models, cell cultures, etc.) and the improvement of laboratory animal medicine. Some experiments need to be repeated in order to discover errors and to confirm that the first research results are valid and correct. Experiments must also be repeated to check changes in weight, temperature, and dosages.
