I raise rough collies. One of them has a tenseness- very sensitive. I think the Lyme vaccination did this- or the tick disease she has had. In any case I have been told that the DAP collars can help. Any advice?We have 4 collies. She is the only one that has developed this, but the other 2 adults never got the vaccination. She is very sweet and loved being a mother. They live in the house with us and have a very good life. I feed them "Taste Of The Wild, Bison" dog food. Thanks,Linda