Oh, dear. I hadn't seen the original thread. Apparently the OP bathed little Bam Bam in Hartz flea shampoo. I have heard so many horror stories about deadly reactions to Hartz and other flea products sold over the counter. I wonder if this could be the cause of his symptoms?
The side effects from Hartz flea products are frightening:
HartzVictims.org - One More Victim is One Too Many