Grass that my dog can use without destroying it?

Question:I went to the pet expo earlier this year and they were selling a certain type of grass( which looked real), that would not be damaged by pet urine. would anyone happen to know the name of that grass and where I could purchase it? also, where could I buy grass that is already grown, so all I have to do is lay it in the back yard?

Answers:
I am unsure which grass you are talking about but we have St Augustine grass and it is tough.Sodfarms are the best way to go on where to get the grass.depending on the size of your yard the leftover pieces they sell are somewhat cheap or whole pallots for bigger yards.