not seen any whippets so cant comment. seen quite a few whippet/greys since the late eighties ferret, lamp., mooch, and take daytime hares. must admit i like the cross. as for injuries i can only comment on 2 watched over a long period of time. one was worked into his dotage without any real problems. he was mated to another whippet/grey and a bitch was kept back. she proved to be very handy on the lamp but was finished with foot and wrist problems at 5. both these dogs would mark well work with ferrets, lamp, catch daytime rabbits hunting up. the dog was the better on hares than the bitch.