I'm not sure about the plaster or drywall either, but I'd probably want to make sure they didn't get too much of that. My husband has been doing some remodeling work in the dining room recently and I asked him if the chips of plaster on the foor could hurt the dogs any, he said it was just latex and not toxic, but I'd still discourage either the dogs or the birdie from ingesting much of it.

As far as newspaper, from what I understand the inks of that were changed awhile back so that they are environmentally safe, and I use it as a floor liner for my tiel with no problems. She will shred it a bit when she lays (infertile) eggs, I'm not sure if she actually ingests any but I haven't seen any harm from using it.