Pet owners who horribly misstreat their animals ....
I remember when I was a kid living in Newfoundland where my dad was stationed (he was a radar officer, a captain working on the Pine Tree Line), another family got the new posting before we did for another station back in the States.
They had a young dog (a cocker, I think) and a small car, and so their solution was to obtain a dog carrier from a company that made them. It was designed to strap to a rooftop luggage rack, and it had a polished all-aluminum shell about the same dimensions as a big Samsonite bag laid-down, only taller, roofed over against the weather, and was ventilated and had a front "picture window" about 8" x 15" in the front of the carrier. I thought it was pretty neat and could see myself traveling happily in it. The carrier had typical bedding for an animal and was a good solution for transporting pets on long crosscountry journeys.
I think Romney had something similar, an especially good solution if the dog was having problems with incontinence. Correct me if I'm wrong, I think he said it was.