Meet Sid Russell, a Jack Russell Terrier, who has developed a version of fetch that doesn’t require humans; all that’s needed is a tennis ball and a set of stairs:
![Hudson & Rex TV show poster.](https://dogtime.com/wp-content/uploads/sites/12/2025/02/pixelcut-export-2-e1739342725330.jpeg?w=182&h=122&crop=1)
Meet Sid Russell, a Jack Russell Terrier, who has developed a version of fetch that doesn’t require humans; all that’s needed is a tennis ball and a set of stairs: