I still don't know what causes a dog to seek out an MFD signal line. That one guy said his dog stuck his nose in the air as if it was sniffing but he said he couldn't see it's nostrils moving. Then the dog would walk over and lie down on the line as if it already knew the exact line. I know dogs have a homing instinct so this could be a magnetic sense. I've read that birds can see the mangnetic lines, so maybe a dog can, too. The fact that the dog places it's head directly on the signal line may give some clue. He said sometimes the dog aligned it's entire body on the line but mostly just it's head. Dowsers can feel the line, some don't even need rods.
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