Here's why:
* Predatory Nature: Rats are omnivores, meaning they eat both plants and animals. They are also opportunistic predators, meaning they will eat whatever they can catch and subdue.
* Size Difference: While there are different sizes of rats and mice, a larger rat could potentially overpower a smaller mouse.
* Competition: Rats and mice compete for food and resources. In cases of limited food availability, a rat might prey on a mouse.
However, it's important to note that:
* Rats don't typically hunt mice as their primary food source. They prefer other food sources like seeds, grains, fruits, and insects.
* Mouse-eating behavior is more likely to occur in areas with high rat populations and limited food sources.
* Smaller mice are more vulnerable to larger rats.
So, while it's not a common occurrence, it's definitely possible for a rat to eat a mouse.