Animals in multi-pet households show behavioral changes following the loss of a companion, and understanding grief in pets helps owners provide appropriate support during bereavement.
Pet grief is a genuine welfare concern that is often overlooked in the human experience of losing an animal companion. The surviving pet loses not just companionship but also social structure, play opportunities, and behavioral anchors that their companion provided. Behavioral changes including appetite loss and lethargy represent real suffering that deserves attention and management. Providing additional human companionship, maintaining consistent routines, and allowing the animal to process the loss without premature introduction of a new companion typically produces the best welfare outcomes. Veterinary consultation is warranted when grief responses persist beyond 4-6 weeks or significantly affect the animal's physical health.