text:  Well, I think they rely upon the Earth's magnetic field for navigation. And that's how these dogs and cats will come a thousand miles home, you know. They take them away and they come back. That's not magic. And that's how the whales and dolphins travel and migrate to thousands of miles north-south that belong to the Pacific coast, you know. In fact, Dr. Kirschvink at UCLA, his hypothesis is that they travel in magnetic troughs.