I am currently in the process of training my dog to "sniff" out targets that are too deep for my machine to detect. Seems to be digging tons of holes but no silver...
i thought about putting a harness with pockets on my dog and taking him on a road trip.. in allot of the cities there is 10+ banks in a square mile.. a extra hand carrying all that weight would be nice!
My cat wants attention and rubs up on the boxes when I sort to scratch herself, or will sit right in front of me so I can't work anymore.
Otherwise, I had an awesome box or two of halves in the past, and got my wife to join in to find silver (multiples per roll, so she was definitely interested). She would rub the rolls on the cat's head for luck before she opened them.
My bunny(seen in my profile pic) always rubs her neck on the boxes of coins. Just the boxes, not the coins. She marks her territory using scent glands on her neck. Me and my family joke about how it's the bunny's box, not my box hah.