i'm not thinkin of gettin one just yet but was just wonderin do saint bernards really eat much more than say a labradour. any ans greatly appreciated.

They eat quite a bit more, have a look on the guidelines on a packet of dog food, that will give you some idea. I notice from one of your other posts you also have a young Peke, I would think carefully about getting a giant clumsy breed like a Bernard with such a small dog.