A surviving pet sleeping considerably more, or restlessly pacing through the night after losing a companion animal, is showing a genuinely documented behavioral pattern that researchers now recognize as grief-like response.
What a Major Survey Study Found
A Morris Animal Foundation funded study surveyed 279 owners about behavioral changes in 414 surviving cats and dogs following the loss of a household companion, finding that roughly 42% of dogs experienced changes in sleep behavior, with 81% of those affected sleeping more than their usual baseline. The same research found affectionate behavior changes in 74% of dogs and 78% of cats, with both species commonly seeking out the deceased companion's favorite resting spots in the days and weeks following the loss.
A Separate Study Confirms the Pattern
Research published through veterinary behavior sources analyzing owner reported responses in New Zealand found that approximately one third of grieving dogs and around 20% of grieving cats napped noticeably more following a companion's death, alongside decreased appetite in about 30% of surviving pets overall. Interestingly, this same research found a genuine correlation between decreased appetite in a grieving dog and elevated grief in that dog's owner, suggesting pets may pick up on and mirror the emotional state of the humans around them during this period.
How Long These Changes Typically Last
The Morris Animal Foundation research found that affection related behavioral changes tended to resolve within two to six months following the loss, while most other behavioral shifts, including changes in sleep, generally eased within about two months. Veterinary sources broadly agree that six months represents a reasonable outer window for grief related behaviors to resolve naturally, offering owners a genuinely useful timeframe for what to expect during this adjustment period.
Supporting a Grieving Pet's Sleep
- Maintain consistent daily routines around feeding, walks and bedtime, since predictability offers genuine stability during an unsettled period
- Offer extra calm attention and physical closeness, since increased affection seeking is a well documented part of the grieving process for both dogs and cats
- Allow a surviving pet time near the deceased companion's favorite resting spots rather than immediately removing every trace, since this searching behavior appears to be a normal part of processing the loss
- Watch for signs extending well beyond six months, or any complete loss of appetite, particularly in cats, since these patterns warrant a veterinary conversation
When to Bring In Veterinary Support
Prolonged behavioral changes, or physical symptoms like sustained appetite loss, are worth raising with a veterinarian to rule out an underlying medical issue separate from grief itself. Most surviving pets, with patience and steady routine, gradually return to their normal sleep and activity patterns as the initial disruption of losing a companion eases.
The takeaway: Changes in sleep following the loss of a companion animal reflect a genuinely documented grief response in both dogs and cats, and steady routines paired with patient, extra attention support a surviving pet through this well recognized adjustment period.