How do animals and humans cause erosion?

Erosion occurs for several reasons, but a main reason is human activity. When humans disturb the earth with construction, gardening, logging and mining activities the result is a weakening of the topsoil of the earth, which leads to excessive wearing away and erosion. Animals can cause soil erosion only in the case of overgrazing, be it in the wild or fenced pasture. And only if wind or water transports the exposed soil. In the wild, only extreme drought conditions will result in overgrazing; otherwise, the animals naturally migrate to greener pastures

Animals cause erosion in other ways too. When too many animals live in one place, they tend to eat and trample all the plants. Without the plants to protect the soil, it is much more likely to be eroded by wind and water. Animals cause weathering and erosion on rocky shorelines.