The light/dark transition test (LDT) is one of the most widely used tests to measure anxiety-like behavior in mice. The test is based on the natural aversion of mice to brightly illuminated areas and on their spontaneous exploratory behavior in response to mild stressors. such as novel environment and light. This test is also sensitive to anxiolytic drugs treatment. https://www.jmannino.com/best-buy-AniFlex-Complete-great-choice/