What am I doing?

Look at this face. We're going to meet her in the next few days. She's about 6 years old, 55lb. lab mix, spent all of her life until this summer in a parking lot. She's being fostered by someone who can't keep her any longer...

So Matthew and I are taking Duke to go meet her soon. If it works out between her and Duke we'll at least foster her for awhile. As I type this I am fully aware that if she and Duke get along and she moves in here for a planned short period of time we will never let her go. I think we are getting in a little over our heads... and yet I can't stop it. What am I thinking? 140 lbs of dog and a baby! How will I handle that? Ah well, when it rains it pours. This pooch needs a home and if we can give it to her that's what we'll have to do.