How can animals help plants to develop new territories?

How can animals help plants to develop new territories? Give examples of wonderful people who can participate in the spread of plants. What helps plants spread the pathway?

In some plants, the seeds are enclosed in dry fruits with special outgrowths in the form of hooks. Such a device allows the fruit to cling to animal hair and spread over long distances. For example, foxes, bears, moose, deer. In other species, the seeds are enclosed in dry nutritious fruits, which the animals collect and hide in the reserve, often forgetting about them. For example, squirrel, chipmunk. Some plants have taken a different path. They form juicy fruits that animals love to feast on. At the same time, the seeds go through the digestive process unharmed. For example, titmouse, orangutan, bat, etc.