I am an owner of two border collies, both from the same litter. My male, Max, has balding "elbows".. i'm not sure what its from! His sister, Sadie, has them as well, bad not as severe as his! By elbows, i mean the top of the from legs. Before these dogs, i had another wonderful BC who had the same thing happen, but this time it seems more severe, also. PLEASE contact me ASAP with ANY info or if you have had this happen to your bc, as well.