The others make good points. I think maybe you should try a larger size as well, and another thought is the quail equivalent to a large rat,,, change it up. Do not feed under 10 days though. It's too frequent if it actually becomes a routine.
At times, I'll give a meal that is technically too large, and then skip a month. Then the next meal may be quite small, undersize of what would be normal. I change the size, frequency and choice of prey fairly often, however I never feed under a 10 day stretch and average 12-17 days between meals.
What temps are you running? Evenstar runs her's a bit cooler and seems to have success with that. Eternal hot temps, not providing a night drop and some other factors could keep your boa hungry all of the time. Obviously the heat speeds along the metabolic/digestion process.
When winter comes, some very experienced boa folks will drop temps and go most of the season with only one meal. The lower temps slow activity levels, along with decreased seasonal daylight.
It's really hard to say what the issue is for sure. I would not recommend a lot of traffic by the cage, and I'm not sure having an animal like a dog walk near the cage is a good idea either. As a matter of fact, I'd try to avoid the dog near the snake room/cage.
I like the suggestion of covering the cage.
What size is the cage, and how open is it to the world?
Just consider a few of the things mentioned and see if anything works.