How was Old yeller able to help Travis with spot?

Old Yeller didn't directly help Travis with Spot. Spot was a young dog, and Old Yeller, while being a fierce protector of the family, was already getting old and weary by the time Spot came along.

However, Old Yeller's influence on Travis was significant. Through his bravery and loyalty, Old Yeller taught Travis valuable lessons about courage, responsibility, and the importance of protecting those he loved. These lessons would later help Travis take care of Spot and guide him as he grew up.

While Old Yeller wasn't directly involved in Spot's training, his presence and example shaped Travis into a responsible and capable young man, making him a good leader for Spot.