We have had several monkey mouth calves out of Heatseeker and Heatseeker daughters, so could be where it comes from, but have had them from many other club calf sires also. Is monkey mouth a simple recessive trait like TH or PHA, or is it more complicated than that. We have had some very slight cases and some quite severe. Anybody know of a clubby bull that is definately not a carrier of monkey mouth? What about Spastic Paresis, is there a popular clubby bull that is definately not a carrier? Do we need to have a test to know for sure, and is that in the works anywhere? Sure would simplify my life, since I'm sure I have a few cows that are carriers of monkey mouth or spastic paresis. I have been breeding them to angus or simme to avoid problems, but would love to try some clubby bulls on them! :-\