The family with the most existing species of mammals is the Cricetidae. Hamsters are a group of small to medium-sized rodents that have many characteristics that adapt to various living environments, such as being good at digging and storing food. Hamsters are widely distributed and diverse worldwide, making them the most diverse family of mammals.
Mammals, as a large class, have a wide variety of species and are widely distributed. According to some data, it is estimated that there are approximately 5400 species of mammals worldwide, belonging to different orders, families, and genera. Among these mammals, in addition to the Cricetidae family, there are many other families that also have a considerable number of species, such as Rodentia, Pterodactyla, and Shrew. Animals in these subjects play important roles in ecosystems and are of great significance for maintaining ecological balance and biodiversity.
The family with the most existing species of mammals is the Cricetidae, but the overall diversity of mammals is also very rich, which deserves further understanding and protection.