Do boxers have lock jaws

Hi there, I own an American Staffordshire Terrier, very powerful dog including the jaw. My best friend owns a boxer and we had this exact discussion between ourselves about 2 years ago. We exhausted every avenue of "lock-jaw". Read every thing we could find about lock jaw and asked numerous Vets. They all had the same answer......No dog on this earth has "lock-jaw". The only case of a dog having lock-jaw was a dog with tetanus lock-jaw, it is very rare that a dog gets this type of disease , that is the only type of lock-jaw a dog may get. It's a medical condition , nothing to do with the actual "lock-jaw" I hope this answered your question...there is no such thing as a dog with "lock-jaw". Its a myth. Check out this site, its the one we found to be most creditable and he confirmed the "lock-jaw" myth http://pitstopnc.tripod.com/id2.html