Thanks to the ASPCA... they've calculated the yearly cost of owning a dog.
They figure it's $1,001 for a small dog, $1,214 for a medium-sized dog and $1,448 for a large dog.
When you factor in the expected lifespans of the dogs, it pretty much averages out to a lifetime total of $15k! A lot cheaper than what I thought the # would have been
Source: Time