It's a mystery...

Sherry and I are dog lovers, and I've racked my brains to figure this out - I cannot come up with any logical reason. I can't even come up with an illogical reason. What would possess someone to do this to not one dog, but multiple owners with multiple dogs? What started it? What is the relationship here? I feel compelled, like matter being sucked into a black hole, to do this with Kadie.