Dogs and cats show measurable behavioural changes after losing a companion animal. Supporting surviving animals through the grief process is an important welfare responsibility.
Studies show 50-65% of surviving dogs show changes in sleep, appetite, and vocalisation after a companion dies. Cats show reduced play, increased vocalisation, and searching behaviour for deceased companions. Providing comfort and maintaining routine helps surviving animals adjust; avoiding major changes in the immediate post-loss period is beneficial. Introduction of a new companion should be timed to the surviving animal readiness, not owner preference. Some animals benefit from seeing the deceased companion before burial — this appears to reduce extended searching behaviour.