Hmmmm...in the US I think the general rule is 24 hour notice, unless it is an ER. But, how did he know of the leak? If you had called to tell him, and then he responded...well, what can you really expect. Water can do more damage than fire, as strange as that sounds. As to the rest, I would have just said, "Oh, my place is such a mess" . But, how does he know how much time you spend on the 'net? But, again, he is letting you have a larger sized dog, and what are your other options???