Dogs always eat their own feces, which may be caused by factors such as hunger, lack of trace elements, and rebellious psychology. Feces contain incompletely digested energy and nutrients. When dogs are extremely hungry, they will eat their own feces to replenish the energy their bodies need.

Dogs usually eat a single diet, which causes the body to lack certain trace elements and lead to pica. It is recommended to feed dogs special trace element preparations for pets and maintain a balanced diet.

The owner often scolds the dog for urinating and defecating everywhere, which can also cause the dog to eat feces. Some dogs learn how to "survive through the cracks" from being subjected to corporal punishment or abuse day after day, so they simply eat their feces and destroy the evidence so that their owners will not beat them. It is recommended that the owner should not hit or scold him at ordinary times, but provide positive guidance.