Here's why:
* High Fat Content: Peanuts are very high in fat, which is a major source of energy for squirrels. This makes them a very appealing food source.
* Ease of Access: Peanuts are often readily available and relatively easy for squirrels to crack open.
* Taste Preference: While this is subjective, squirrels seem to enjoy the taste of peanuts more than almonds or pistachios.
However, it's important to note that squirrels will eat all three types of nuts if given the opportunity. Their preference may also vary depending on individual squirrels and the availability of other food sources.