We outline the five stages of Pet Loss Syndrome (PLS) grief that pet owners experience after losing their companion animal, and provide guidance on healthy coping strategies for each stage.

| Item | Stage 1: Denial | Stage 2: Anger | Stage 3: Bargaining |
|---|---|---|---|
| Main emotions | Disbelief, numbness | Guilt, resentment | Regret, 'what if' thinking |
| Representative thoughts | "It feels like they'll come back soon" | "Why didn't I realize sooner" | "If only I could turn back time" |
| Duration | Varies greatly by individual and is not fixed | Varies greatly by individual and is not fixed | Varies greatly by individual and is not fixed |
| Recommended coping | Don't suppress your emotions | Express through writing & conversation | Allow yourself enough time to grieve |

When Professional Counseling Is Needed
Grief is a natural response, but if the following symptoms persist for an extended period and significantly disrupt daily life, it may indicate complicated grief. In such cases, professional psychological counseling or psychiatric care is recommended. - Prolonged and marked reduction in sleep and appetite - Inability to perform daily activities (such as going to work or managing household chores) - Self-harm or suicidal ideation - Extreme overprotectiveness or anxiety toward other family members or pets - Dependence on alcohol or drugs

Things to Keep in Mind When Supporting Family Members
Please never dismiss a family experiencing pet loss with remarks like, "It’s just an animal," or "Just get another one." Such comments invalidate their grief and can make the healing process much harder. Instead, offer words of empathy, such as, "I can only imagine how difficult this is for you," or, "You must miss them so much." If there are children involved, do not hide the truth from them; explaining death honestly and in an age-appropriate manner supports healthy grieving.

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.
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[1] Kübler-Ross, E., On Death and Dying, Routledge, 1969
[2] Packman W. et al., Continuing Bonds and Psychosocial Adjustment in Pet Loss, Journal of Loss and Trauma, 2011
[3] American Veterinary Medical Association, Pet Loss and Bereavement Guidelines, 2020