I have a large extra lot, and would rather they eliminate out
back than in the closer to the house yard. So all I ever had to do was leave some where I wanted them to go. They go out, find it, smell it, that triggers movement. No commands involved, just smell. Go on command? Seems like after 36 hours, you'd get that is causing constipation! Sorry, but the dog's elimination is a simple matter of timimg, unless there is an upset, which you seem to be causing. I doubt the alpha should care when, and where is easy, chill out and try it!

Mike...I'm laughing too hard to type properly, really...
I can't imagine what your dog's going through-well, besides way too much food that is...and if she is constipated, that's not helping her at all. I understand the bile issue
would make you switch to more that a single feeding, but treating her like a play-dough toy isn't the way to go.
Why not just make that 1/2 block trip and let her feel better. She may end up a neurotic mess when all is said and done, and you don't want that. It's far easier to avoid
mistakes than it is to correct them. Don't make her too shy to poop in front of you!

Training your dog to eliminate on command isn't complicated, but it takes time for the dog to understand what you want, just like any other thing you may ask of your dog. Patience, and more patience. Especially something like this. It's very handy- need a stool sample, leaving the dog alone for any length of time, before visiting, any outings, etc...I don't look at it as regimenting his every move. I think it's the same as a telling a kid to go before going off somewhere in the car. You don't want to have to pull over at the first restroom. Actually, I discourage my dog from urinating all over the place. This is marking territory, and I don't particularly care to stop every 2 seconds while out walking. Most people frown on my dog soiling their yards anyways. Might as well teach him to do it at home and save the outings for pleasure.

Urinating all over the place is marking territory? I've read it's something else--after all, dogs will mark EVERYWHERE and not just their territory. I've always assumed it was kind of like a calling card..."Been here, hi I'm me..." kind of thing. Or some other obscure form of dog fun. Cause, if you let two intact strange male dogs that aren't nutcases mingle with each other, they just pee over each other's pee all day and seem to be happy about it. <img src="/ubbthreads/images/graemlins/crazy.gif" alt="" />

I have trained my dog to "go pee pee" (which means to pee or poo) on command, but I'm not nearly as strict as you sound like you are about it.

Oh, walking and moving around helps to stimulate the bowels, so maybe you could play with her inside or take her out to a different part of the yard and play with her for a few minutes first.