Dogs that eat a diet of mostly dry food get thirsty more often. It is very important that your dog water bowl be kept full at all times. The amount of water that your dog will drink depends on many factors. How much exercise does he get? It he outside often?  The hotter it is and the more exercise that he gets, the more water he will drink. A word of caution, be very careful of where he is getting his water from. I say this because if he is drinking from the toilet, there are chemicals such as lye that he could consume and get sick. This is also true for cats. I have one cat that loves to drink from the toilet. I try to keep the lid down all the time! She still manages to get into the toilet  while I’m not looking!  I would also be cautious if your dog drinks from ponds or streams while he is outside. There may be elements in the water that may harm him.

Keep in mind that I tend to be on the “upper” end of the cautious scale. I don’t own a dog at this time but if I did, I would also be a little cautious of him drinking from bowls that store owners sometimes keep outside the stores. Not that I don’t trust the store owners but I don’t really trust the “passers by.”  Keep his water fresh and his bowl full at most times and you won’t have any problems.