So, after poking around online for reviews, I measured Miss P.'s girth and ordered one, $25, free shipping. It arrived. I slipped it over Pooka's head, then pulled her paws through one by one. So far, so good. When I buckled her in, she glared at me, but stayed still en route to the lake, standing and staring out the window.
When it came time to get back into the harness after a long walk around the lake, she turned her head, clearly a cool "no thank you" gesture. I had to work a little harder to get her into it -- and even harder still to convince her to hop back into the car. When she did, she immediately cowered on the far side of the back seat. I had to climb in and wrestle around to get seat belt looped through strap and buckled again.
Not half a mile from the parking lot, I hear a whole lot of scuffling coming from the back seat. Little Pooka "Houdini" M. had wriggled out of the darn thing. And what's more, a terrible, terrible smell begins to emanate from the back seat, too. Appears her contortions prompted a little glandular expression. I'm interpreting that as a pup's equivalent of flipping me off.
Now what?