just wondering how many times a day you lads and lasses are filling them up ,as just keeps frezezeing ,when i fill mine up which is about 5 times aday ,i emty the block of ice,i pour boiling water into the boil [big bowl]and then half with cold ,just wondering how much water do you think a dog needs a day,and do they drink more or less when it this cold,,,,atb,,,and happy christmas ,,,,,gaz