[RunShepherdRun]

In my experience, wood floors differ in how slippery they are. We have factory finished wood floors and they are too way slippery for a senior dog to walk on and for the young one to play fetch. Friends have wood floors that were treated with water based finishes and keep the slightly grained wood surface, giving more traction.
I find finishes important not only when it comes to traction, but also whether they evaporate any toxic substances. The dogs noses are much closer to the floor than ours. So I would prefer the water based finishes on those grounds, too.
I love the tile in our kitchen but find it cold in the cold New England winters to stand on. Need to wear warm slippers on tile, then it's ok.

Hope you'll find a solution that works for all members of the family/pack.

Sarah