The little boy answered, "Because they have nothing. No home, no family, and if I don’t feed them they will die."
“But there are homeless dogs everywhere," the old man replied. “So your efforts don’t really make a difference”
The little boy looked at the dog and stroked him. “But for this little dog, it makes all the difference in the world.”

He chose to end his athletic career to save a 28-year-old male cancer patient who doctors said had just six months to live.
Female chimpanzee Dorothy died of heart failure. She was over 40 years old.
As she was being carried away, behind the fence together all the normally lively chimpanzees looked on in silence as their friend's lifeless body is wheeled away. Some even put their hands on the shoulders of one another.