How do territorial animals define their territory?

Question

Just as the title suggests, how do animals that will run other animals out of their territory define where the territory starts and stops? With humans we have very obvious signs such as fences and borders to define territories. How does it work with less intelligent animals?

In: Biology

Answer 1

I don’t know the answer but people seem to be focusing on the method used to define the territory where I believe the OP is asking how the animal determines this tree marks the boundary vs that tree…