17. The chimpanzees that mourned their friend.
When Dorothy the chimp died of heart failure at the Chimpanzee Rescue Center in Cameroon, her fellow chimps hugged each other and watched solemnly as their friend was laid to rest.
18. The cat that comforted the dying.
Oscar was always able to tell when one of the residents in his nursing home was close to death. He would sit with them on their bed during their last moments to comfort them.