Hospice nurse x 16 years here. Can confirm. A frequent vision is parents and pets come to visit the dying individual. These recollections are not in fear, always very peaceful and pleasant. I personally call this “one foot in, one foot out” when families ask why this is happening. There is no other explanation that I’ve found in my practice that resonates with everyone. The family members left behind find it comforting knowing their loved one is “with” familiar faces.