Universe 25 Mouse Experiment is an experiment conducted by John B. Calhoun in 1972. This experiment examined the behavior of mice under population overgrowth and environmental constraints.

The experiment was carried out in a laboratory environment consisting of 4 rooms, each of 2.5 square meters, inhabited by 250 mice. Rats were unlimited in terms of food, water and shelter.

The experiment showed that the population of mice was increasing rapidly. The population doubled in the first 100 days, reaching 2,200 mice in 250 days. This rapid population growth has led to increased competition and aggression among mice.

As the experiment progressed, the mice began to deviate from their normal behavior. For example, their sexual activity decreased, they stopped producing new offspring, and they began to avoid social interaction.

The experiment ended in 1973. By this date, the population of mice had dropped from 2,200 to 20. The remaining mice were aggressive and apathetic.

The experiment was described by Calhoun as a "behavioral collapse". This experiment demonstrated that environmental limitations and overpopulation can negatively impact social behavior and reproduction.

The experiment was also interpreted as a warning for the future of human societies. Some experts have suggested that the Universe 25 Mouse Experiment is a sign that overpopulation and environmental limitations may lead to similar consequences in human societies.

The Universe 25 Mouse Experiment demonstrated that overpopulation and environmental limitations can negatively impact social behavior and reproduction. However, there is some debate about generalizing experimental results to human populations.

Some scientists argue that experimental conditions naturally affect the behavior of mice and that these results cannot be generalized to human populations.

For example, in the experimental setting, mice had unlimited access to food and shelter. This is a situation that does not exist in human societies.

Other scientists argue that the experimental results are an important warning for human societies. For example, experimentation has shown that overpopulation and environmental constraints can increase rates of violence and crime.

Universe 25 Mouse Experiment is an experiment conducted by John B. Calhoun in 1972. It is based on monitoring the behavior of mice in an environment where all physical needs are met.