you will have to forgive my ignorance in the correct terminolgy,i could google all the relevant lingo but cant be arsed so racing greyhounds,built purely for speed have a very even shape,long straight back obviously noticeable but lurchers come in all shapes and sizes,iv seen them long in the front leg(told you lol)and the back has a very prominent slope down from the neck toward the tail,also vice versa,very short in the front leg and the back slopes up from the neck to the tail.
so how much would this.......if at all..... affect the dogs working ability,cheers