sounds like medications working. cats have to be treated differently with different systems different meds and diff antibiotics than other animals etc keep the litter box extra clean in this process.. seen a video the other day of someone took a paper towel wet it with alcohol i think, wiped the kitty feet and looked at it under a scope pretty creepy cats carry a parasite that (makes you like them) according to my grandson's app he has on his phone hes always looking up interesting things hes so mine lol