Do you think that's a Mouse at the International Space Station?

Do you think that was mouse in this footage or something else?

The two NASA's astronauts travelling through FalconX shuttle docked at the International Space Station today 31 May 2020 after a 19Hours plus shuttle from Earth. Seems there's a mouse that could be seen in the video, did it travel with them from Earth or just some mechanical movement of the docking station?