In 'Back to the Future' did Einstein the dog do?

In "Back to the Future," Einstein, Doc Brown's dog, is the first living being to travel through time. He is sent one minute into the future in the DeLorean time machine, demonstrating the machine's functionality before Marty McFly uses it. Einstein's brief journey serves as a crucial test for Doc's invention, showcasing the time travel concept central to the film's plot.