The Animals of Farthing Wood (1993)

Season 3: Episode 4

While the number of Bully's rats continues to grow, so does the number of missing animals. When Dash sees Plucky being taken away in a cage to a truck, she decides to follow the truck only to be shut out of a mysterious human establishment surrounded by high walls and spike-top gates. Meanwhile, the Weasels to stay at a farm but the animals wouldn't let them stay. They gain a new Protector who is Rollo the Sheep Dog.