I find that strange about 4 cats, I never had a problem saying 4 though we had a short time frame to move this time and I said 3 just incase!!!I would go with saying 3 personally in case there is a 3rd out (though you could always say you are watching a friends pets!)I am almost sure my landlord knows we have 5 by now...but he couldn't seem to care less...we are his only tenants that pay rent on time and he always tells us how much he appreciated that
, the poor guy!!!