RESTful Routes
INDEX - /dogs - GET - Dog.find()
NEW - /dogs/new - GET - N/A
CREATE - /dogs - POST - Dog.create()
SHOW - /dogs/:id - GET - Dog.findById()
EDIT - /dogs/:id/edit - GET - Dog.findById()
UPDATE - /dogs/:id - PUT - Dog.findByIdAndUpdate()
DESTROY - /dogs/:id - DELETE - Dog.findByIdAndRemove()