Ranger in Time

Ranger in Time is an American animated television series with educational elements produced by Disney Television Animation in association with Scholastic. A crossover spin-off of both The Lion Guard and Rapunzel's Tangled Adventure, the show is an adaptation of Kate Messner's book series of the same name published by Scholastic; it details the adventures of a search-and-rescue dog named Ranger who finds a magic first-aid kit that enables him to travel through time.

Summary
An adventurous and caring Golden Retriever named Ranger has been trained to be a search-and-rescue dog but he can't pass his test officially because of his lack of focus. One day, he finds a mysterious first-aid kit in his owner's garden that has the magical ability to transport the user anywhere in history. Blessed with a spirit of a hero, Ranger has many adventures throughout time-space, making friends, helping people, all while solving the mystery of the magic kit.