Susan Anderson (psychotherapist)
While Kübler-Ross, Anderson, and others have attempted to define discrete stages of grief, such as an initial period of numbness leading to depression and finally to reorganization and recovery, most modern grief specialists recognize the variations and fluidity of grief experiences, that differ considerably in intensity and length among cultural groups and from person to person. No grief stage theory has been able to account for how people cope with loss, why they experience varying degrees and types of distress at different times, and how or when they adjust to a life without their loved one over time.
Animal grief
One of the questions that can be asked aside from does animals grief is how long do they grieve for or if these animals show signs of mourning. Anthropologist Barbra J King mentions how animals might sleep less or change their ways in their daily life styles. These animals might also end up staying close to their companion's corpse for a long time as well (Safina, 2015). Something we know is that emotions in a human can change one day they can be sad and the other happy. Actions are taken days after one of our loved ones die such as time of school, work or any social interaction (Safina, 2015). It is actually the same for animals. An example that can be shown is in chimpanzees.