The reason why fancy rats are not commonly kept as pets in China is primarily due to their challenging nature in terms of tameness and their nocturnal behavior. These factors, along with certain other considerations, contribute to their relatively low popularity as pets in the country, despite their cute appearance.

Fancy rats, also known as hooded rats or domestic rats, are characterized by their distinctive coloring, often featuring a dark "hood" of chocolate or black extending from their forelimbs to their head, with the rest of their body typically being white, sometimes with black spots or a stripe along the back. While they are found in various regions, including the United States and China, their popularity as household pets in China is not high.
Challenges of Keeping Fancy Rats as Pets in China
Several factors contribute to the lower prevalence of fancy rat ownership in China:
Difficulty in Taming
Fancy rats are most likely to bond with humans if they are handled from a young age. If you try to adopt or start interacting with an adult rat, it can be very difficult to tame them, and they may even show aggression toward their owners. This lack of easy tameness is a major deterrent for potential owners.
Nocturnal Behavior
Like many rodents, fancy rats are primarily nocturnal. This means they are active at night and tend to sleep during the day. This can be an issue for owners who are disturbed by their nighttime activity and noises. It's possible to sync a rat's schedule with a human's but requires significant interaction.
Odor
When first brought home, fancy rats can often experience stress, which can lead to them producing soft stools that have a strong and unpleasant odor. This can be off-putting for some owners.
Short Lifespan
The average lifespan of a fancy rat is about two to three years, and this might be even shorter (about two years) in China due to environmental factors and care conditions. The short lifespan makes some people reluctant to adopt them.
Space Requirements
Fancy rats need a relatively large living space, especially vertical space, which requires a larger sized cage and takes up a fair amount of room in a household. This space requirement can be difficult for many families in China to accommodate.
Sensitive Digestive System
Fancy rats have sensitive digestive systems, and if they are not fed a suitable diet, they can easily develop diarrhea. This requires their owners to carefully monitor and manage their diet.