Sorry I can't help as Mishi takes his Baytril and other meds without a problem. It might not taste too good crushed and he might balk even more if you try to sneak it into his food. Perhaps those pill pocket things that others on this board have used with some success? Sorry I can't be more helpful.

Also, not to sound dumb, but I really don't know - What is PU surgery and what is FLUTD?