Dogs likely have an instinctual sense that death is near based on their declining health.
Instinctual Awareness
Dogs notice the physical changes in their body as they decline such as weakness.
Physical Changes
Alterations in their normal routine like increased rest can indicate to dogs something is wrong.
Routine Changes
Owners' actions and emotions may signal to dogs that something is different.
Owner Cues
Dogs don't understand the full concept of death and dying.
Limited Comprehension
Dogs tend to focus on their immediate circumstances, not the future.
Living in the Moment
Dogs can't comprehend but they feel loved when owners comfort them.
Saying Goodbye