For many people, their first house is also their first opportunity to own a dog. Labrador retrievers are the most popular dogs in America, according to the American Kennel Club. Here's what it will cost to keep the puppy fed:

40-pound bag of puppy food for large-breed dogs (should last 5.75 weeks):

$38.99

One-year supply (10 bags):

$389.90

One-year supply of Scooby-Doo snacks ($4.49 a box; one box per week):

$233.48