Yes the dog could have something to do with your monitor to regurg. My dog made my monitor regurg 2 or 3 times. But she became ok with the dog. I would take the dog into the lizards room. They got used to each other and no problems since. It did take some time. This may or may not be the problem for you. Mumps is right something stresed him out. Just watch your monitor and find out what is doing it. Your sav looks to be doing good, good luck. Is your monitor or has he rubbed its nose to much? That would be a problem.