How Many Dogs?

How many dogs do you consider too many?
We have three "outside dogs", two Golden Retrievers and a Basset Hound. They sleep in a heated doghouse in the garage and spend most of their time outside chasing squirrels and barking at deer, though they have been known to lay around in the breakfast room from time to time. Our fourth dog is a small "inside dog" who spends a lot of time gazing longingly out the window at the other dogs
*I'm* of the opinion that "small inside dog" needs a "little sister" to keep her company. My husband thinks having 5 dogs is ridiculous.
Anyone out there have 5 dogs? Or more?
I don't see a problem with it. We care for and love all of them.
{And sheesh we have 5 kids! lol}