Among their many talents, hamsters have a secret trick for storing food on the run. Spacious cheek pouches on either side of their mouth are used to carry food back to underground storage chambers.
Hamster Hoards Food in Hidden Cheek Pouches

Among their many talents, hamsters have a secret trick for storing food on the run. Spacious cheek pouches on either side of their mouth are used to carry food back to underground storage chambers.