Anticipatory grief
The five stages namely, denial, anger, bargaining, depression, and acceptance proposed by Elisabeth Kübler-Ross in her model of grief describe the process by which people undergo after a loss. Anxiety, dread, guilt, helplessness, hopelessness, and feelings of being overwhelmed are also common. However, it is important to note that anticipatory grief is not simply normal grief begun earlier.
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.