Rodents are one of the most smartest Mammals in the world. Their are many reasons for that.
Beavers are one of the most intelligent rodents there is. The reason that it is because, Beavers use the cold water as a fridge to keep their food fresh, and if they are in danger. They go back to their den that the other animals can't get into.
Naked Mole Rats
Naked Mole Rats have very sharp teeth that can dig holes underground. They rarely grow up and don't breed for a while. The reasons that happens is because they serve their mother till she dies.
Squirrels have one of the most strongest teeth than any rodent. The reason because of that is they can eat one of the toughest acorns in the world. They also know how to hide their food.
Hope you enjoyed.