a friend's 16 yr old male in/out cat the past 2 days refuses to drink from his water bowl. he rushes in from outside (we're in the hudson valley having record breaking heat again) and runs to the toilet (never did this before) and tries to drink from there, flips his water bowl over on purpose, outside tries to drink from hot tub or pool regardless of bowl options offered. could this be dementia or something else? she said he simply will not drink out of any bowl offered but tries vigorously to drink from inappropriate sources! a coworker who used to work at a vet never heard of this behavior-please help; we don't want him to get poisoned or drown!!!