In controlled experiments, researchers found that when rats and monkeys learned to press a lever to obtain food, the animals would slow their rate of pressing the lever if the lever also sent an electric shock to a nearby rat or monkey. So animals with any advantage are more likely to survive and reproduce. This seems like a sound and sensible observation. But Darwin went further. This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest.
Helpful animals use energy helping others with no direct advantage to themselves.
Some put their lives in danger to help or care for others. Surely such useless expenditure of energy on something completely unproductive would have been eradicated during the porpoise's alleged evolution, if Darwin was correct. Problems are obvious Evolutionists have seen the problems. Helpful animals seem to defy Darwin's theory. Some evolutionists have tried to come up with explanations.