Syrian hamsters (also known as golden hamsters or teddy bear hamsters) are one of the most common pet hamster breeds. They are primarily classified based on three dimensions: coat color, pattern, and coat type. Here’s a detailed breakdown:

I. Classification by Coat Color Genes
Basic Color Series
Wild-type : The most common golden-brown color, with no expression of patterned genes.
Cream (ee): A off-white variant, the earliest discovered mutated color.
Black (aa): A darkened expression with significantly deeper coat color.
Rare Color Series
Cinnamon: A warm brown variant.
Albino: Characterized by pink eyes and white fur.
Tortoiseshell: A unique coat color with a mix of three hues.
II. Classification by Pattern Genes
Signature Markings
Dominant spot (Dd): Dark stripes on the back.
Self (dd): Solid color with no stripes.
Masked (Mm): Dark patches on the face.
Special Patterns
Cinnamon masked: Warm-toned facial markings.
Black bear: Full-body dark coverage.
Black-eyed white: A variant of albino individuals.
III. Classification by Coat Type
Short-haired
The most common type, with a coat length of approximately 1-2 centimeters.
Long-haired
The coat can reach up to 5 centimeters in length and requires regular trimming.
Satin: Fur with a silky, glossy texture.
Rex: Naturally curly fur.
IV. Trends in Artificial Breeding
Currently, over 40 color variations have been developed through gene combinations, including:
Tiger: Tiger-like stripes on the back.
Dove gray: A silver-gray gradient.
Sapphire: A rare blue variant.
Due to their relatively large size (15-20 centimeters in length) and gentle temperament, this species is a top choice for new pet owners. However, it’s important to note their solitary nature.