Dwarf hamsters are small rodents that belong to the family Cricetidae. They are popular pets due to their small size, typically measuring about 2 to 4 inches long. There are several species, including the Roborovski and Campbell's dwarf hamsters, each with unique characteristics and colors. These hamsters are nocturnal, meaning they are most active at night. They enjoy burrowing and running on wheels, which helps keep them healthy. Dwarf hamsters are social animals and can sometimes live in pairs or small groups, but it's essential to monitor their interactions to prevent fighting.