Lara - could you open a capsule and do the same thing with it that you do with the pred?

Maybe it is the CAPSULE he senses.

Couldn't hurt to try. Remember that other lady - her cat had had NO cancer treatment and recovered.

As you say, Tiger's may be more advanced by now...but heck, open the caps and stir it in to the stinky stuff!

HUGS to that gorgeous boy.