Pet grieving can be expressed both physically and mentally. Grieving pets may show symptoms comparable to those of grieving adults. As every human reacts differently to grief, so does every animal. Both cats and dogs can suffer loss of appetite, disturbed sleep or a change in sleeping habits. They can appear lethargic, listless or withdrawn. Dogs may lose interest in activities such as walks or play. Cats may groom excessively. For more information see https://www.natural-wonder-pets.com/pet-grieving-how-pets-mourn.html