I have a 95 pound mastiff puppy who chews everything. I didn't want to spend a whole lot of money on another "chew toy" for her but this bed is amazing. It was so flat when we opened the package but didn't take long for it to open up. She loves this bed and have yet to see her even nibble! I have even layed down with her and I could sleep on it for sure. We had to purchase the extra large and we are very satisfied.