Racing whippets as a rule tend to be thick , hyper and do a lot of yapping, they do not possess stamina for lots of runs, they dont like it, our whippets that are bred from mikes stock are taking regular baga of 30 odds and 40 , s on the lamp, no probs, but they are stronger than your general whippet and will die in the name of the catch no differant to a good lurcher but thats what they are capable of, the size comes with the amount of inbreeding done, course theres other whippets out there but the ones off mikes stock have done for us when others tried havnt , ringer