My daughter and I just built an 86" long credenza that will hold 2 large dogs. We stained the pine with Minwax penetrating oil based fast drying stain and then when thoroughly dry used a Minwax Polyurethane fast drying top coat. These products, although both oil finishes are so thin when applied and sanded in accordance with manufacturers directions that they will not flake off or chip. If the dog ingests it, he has to do it by eating the wood, in which case he has more problems than just some very thin stain and finish. We used a water based grey porch and deck paint for the inside base and underside of the top.