The Campbell's Russian Dwarf Hamster
The Campbell’s dwarf hamster is the most commonly kept pet dwarf hamster. They usually grow to roughly 2 to 3 inches in length and have a much rounder figure than the Syrian hamster.
Another difference between them and Syrians is that they have fur on their feet and upon their tails. Campbell’s come in a great variety of colours, their wild colour is typically referred to as normal (or agouti), which is a greyish brown colour with a dark black dorsal stripe.
Through mutations from breeding other colours have emerged. I feel the next most common Campbell’s colour would be the argente, which has an orange like colour with a darker orange dorsal stripe, they have now been bred to have either red or black eyes.
Along with colour mutations Campbells have a few pattern mutations and can be satin furred. Patterns of Campbells include mottled, collared (which is often where the mottling is focused like a band around the animals neck/shoulders). Though mottled is a standardised pattern you tend to see more platinum patterned hamsters. Some platinums can look like they are mottled or collered, though many look more like there colour has silvered.
(above picture is of two fathers and their male babies, the babies are 38 days old there. Though campbells can be kept in large groups this size is not recommended!)
Campbells should have a cobby broad body, with the head in proportion to the body. Wide heads are desired in campbells and a good broad scull is desirable with a short face and blunt nose. Their feet should be barely visible, when they are standing up, and their eyes and ears set well apart on their broad head.
Their hair should be thick and dense, and as soft as possible, they should have an almost woolly appearance.