It really does depend on what kind of dog it is as well. If it is a bigger dog it will impact the wear on your floor faster. I have seen houses done with wide plank Alder (a very soft wood) and be completely trashed in a year from their Golden Retriever, but also seen the exact material over a year or so with 2 Shi-Tzu's and while you could still see scratch marks it wasn't near the level of needing a re-sand immediately. Oak, Maple and Hickory stand up well with dogs and are a popular choice in the home market if you and worried about re-sale value. A floor is only as good as you take care of it as well.
As far as going up to the top of the Janka scale with a product like Ipe, like Bigtime said, Ipe while being very hard, is to the point of being brittle where it can split easily if humidity isn't maintained and while harder to dent it can actually chip instead like paint on a car.
Hardwood is a good choice just for the simple fact that you CAN re-sand it before you sell and have basically a brand new floor and even change the stain color if wanted to go with new paint or style.
If laminate is still an option there are some fantastic products out there now that look nice are very durable and come in around $2/sqft. Just don't get the stuff with 3 strips of wood pattern in 1 piece it just looks bad, get the single plank pieces (personal gripe of mine).
PM me or Bigtime if you need any more info or are ready to buy and have it installed. Happy to help.
