This I believe

A bird and even a cat can see far more clearly than a man. The eyesight of an eagle is eight times as keen as that of a man's.

A dog's nose is a "million times" better than a detecting odours than the nose of a man. An Alsatian Dog is believed to have over 200 million cells for smelling, whereas a man has only about 5 million. Again, a dog has far better hearing power than man.

The skin of a fish is very sensitive to the slightest disturbance in the water. The skin of a man is no where as sensitive as this. On the basis of knowledge, gained from such imperfect sense organs, men often say"This is believe; this I don't."