When is free not really free?

Our energetic, sweet "free" puppy, Cowboy, has cost us a lot of  money lately.  He has become an escape artist so Forrest has had to rebuild part of our backyard fence.  Right now our free dog has cost us about $300. Those of you who have been to our house know that the fence on the side of the house where the roses grow is short so that we can enjoy our view of the water, Camano Island, and the garden.  Our older dogs have never jumped out of the yard.  Cowboy discovered that he could stand on a planter box, put his paws on top of the fence, and jump out of the yard.  Now the fence is two feet taller and he can't jump it.  Forrest and Noah spent most of Veterans Day tearing out the old fence and building the new one in the wind and rain.  The next expense will be neutering during Christmas break.  Hopefully he won't be quite so hyper after his procedure.