Here's why:

* Predators: Mice are prey for a variety of animals, including owls, hawks, snakes, foxes, cats, and even larger rodents.

* Population Control: The presence of these predators helps to keep mouse populations in check.

* Availability of Prey: When predator populations are high, the availability of mice as prey decreases. This can limit mouse population growth.

Other biotic factors that can limit mouse populations include:

* Competition: Competition for food and resources with other mice or other species.

* Disease: Outbreaks of diseases can significantly impact mouse populations.

* Parasites: Mice can be affected by parasites, which can weaken them and make them more susceptible to disease or predation.

While abiotic factors like weather and availability of shelter are also important, predation stands out as a significant biotic limiting factor for mice.