Actually he has a video on his Youtube page about the parasites from Discovery channel or something. Apparently many cat owners are infected and don't even know it. Its effects are very marginal so 1 in 4 people probably have it and don't know it.
Though considering the cat love around here I'd say it's more like 3 in 4 of POEtv users.
None of this makes him any less hilariously crazy.