I have a mastiff and he loves to chew. This was a good size and very durable he has had it for over two weeks and it's still looks almost new. Great price!!It's super solid hard plastic, heavy. Bought it for my French mastiff pup. At first was useless cause it was too big and heavy for him, and being too hard I thought he couldn't even bite it. Till he grew. Now he likes it and chews it from time to time. Not his favorite but the duo need all types of surfaces to chew, including hard ones.The dogs loved it but they started to chew off the little nubs that are all over it.Unfortunately within a day of getting this toy, the paint started peeling. The dog really liked this toy too, so it's very disappointing. While I know it's reasonable to expect wear and tear on toys, there is no information listed to determine if the paint is non-toxic (it only says the rubber is non-toxic).I bought two of these for my pups Christmas stockings and they seem to love them. They are huge chewers and their toys typically don't last long however these seem to be holding up very well. I will for sure buy again when the time comes.Absolutely love this bone! My 60 pound Pit mix can destroy a toy in 10 seconds on normal occasions and this one she has had for over a month and a half and it is still holding strong.My tough chewers still haven't been able to shred this! They chew on it non stop and it's still in one piece! I've bought 2 more so they each have one.Esperemos que le diré al menos más de dos semanas a los caninos. Se ve de buena calidad.