The New Adventures of Lassie (2014)

S1E21 Momma Zoe

After Sarah transports a wolf and her pups to a safer park, Zoe realizes one pup has been accidentally left behind. Determined to reunite the little wolf with its mother, Zoe enlists Lassie and Harvey to help hike the pup out of the wilderness. However, the rambunctious pup proves to be quite a challenge. When it manages to slip away from them, Lassie bravely confronts a mountain lion to safeguard the kids as they scramble to catch the cub.