Grief is the multi-faceted response to loss, particularly to the loss of someone or something to which we have formed a bond of attachment. Although conventionally focused on the emotional response to loss, it also has physical, cognitive, behavioural, social, and philosophical dimensions. Common to human experience is the death of a loved one, whether it be a friend, family, or other companion. While the terms are often used interchangeably, bereavement often refers to the state of loss, and grief to the reaction to loss.

Losses can range from loss of loved ones to the loss of pets. Our response to loss is varied, influenced by personality, family, culture, and spiritual and religious beliefs and practices.

