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Is a Collie’s Senses Better than Ours?

Is a Collie's Senses Better than Ours?

The way in which a collie sees the world is very different from the way humans see it. A collie’s 
sense of smell is far superior to that of humans. It is thought that a collie’s sense of smell is at least 100 times more powerful than that of man, and it is obvious that collies [...]