Mice show a range of emotions on their teeny faces, according to a new study.
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The research saw the rodents react to electric shocks to the tail, sweet treats and lithium chloride injections, which makes the animals sick.
Dr Nadine Gogolla, co-author of the study from the Max Planck Institute of Neurobiology, said: ''Mice exhibit facial expressions that are specific to the underlying emotions.''
Gogolla explained that they carried out to vital study to help determine how emotions arrive in the brain, and they found that the changes in expression were very similar to the human eye.
An example, included how a mouse's ears were pushed back, it's jaw lowered and nose twitched when it was zapped by the electric.