New research unpicks root causes of separation anxiety in dogs. Separation anxiety in dogs should be seen as a symptom of underlying frustrations rather than a diagnosis, and understanding these root causes could be key to effective treatment, new research by animal behavior specialists suggests. Source 3c.
Animals will get feelings and even get attachment so anything they have a connection to and ended up getting separated..Of course they will experience levels of frustration or emotions! Keep in mind that these are living beings at the end of the day so it wouldn't be much of a surprise if there might behavioral problems or changes when separation or isolation happens to the very things they are connected to.