They are among the new additions to the International Union for Conservation of Nature's (IUCN) "red list".
European hamsters are a much larger relative of Syrian or dwarf hamsters that are kept widely as pets.
Human influence on the hamsters' habitats is being investigated as the cause of the species' decline.
IUCN says global warming, industrial development, light pollution and plantations may be possible causes.
https://www.google.com/amp/s/www.bbc.com/news/amp/newsbeat-53363474
European hamsters are a much larger relative of Syrian or dwarf hamsters that are kept widely as pets.
Human influence on the hamsters' habitats is being investigated as the cause of the species' decline.
IUCN says global warming, industrial development, light pollution and plantations may be possible causes.
https://www.google.com/amp/s/www.bbc.com/news/amp/newsbeat-53363474