WOW!!! that is scary.....i had delilah chipped 2 years ago when i adopted her....thre needle wasn't big....she didn't even know that it was being done....say, the persons dog that you were confused with....the name wasn't delilah was it???? good info on the chip moving also......good reminder for vet to check when you go for annual check up....ask your vet to scan your dog to see if it is still in the right place...and if it scanning correct info....i say add it too annual check up list!!