Folks, you need to get a cat, they have no trouble using the litter box on board. Now, when you quit groaning about another cat-lover, I have a different suggestion that I'm sure will enliven everybody's day. I hope nobody is eating while they read this.
Mama cats, and I suspect wolves, don't like for their babies to pee and poop in the den. As soon as they can, they carrie them outside. To stimulate urination, they apply a wet tickle to the kittens anus.
It causes the bladder spinchter to relax.I once found an abandoned litter of three-day old kittens, and I used a wet Q-tip for the task, since unlike mama cat I had that alternative to my tongue. I suspect that there is a mama or too out there who has used the same approach to potty training
a baby. The 'sweet spot' actually seems to be above the anus, an inch or two below the start of the butt crack.
I can't promise that this will work
on a mature dog but I know it works with adult humans (fuggit it, I'm not telling how I know).
Anyway, I really hope something works, cause almost as much as cats I love dogs, too, especially
Samoyeds (bear face or fox?).