Is your neighbors dog driving you crazy? If you are hearing a dog all day But here's a list from Yahoo of four reasons that might at least give you an idea of WHY your dog is barking so much . . .

 1.  They're Startled by Something.  A lot of times it's just a sound, like thunder or a door slamming shut.  You can normally tell if it's a fear-based bark, because their ears are usually back, and their tail is between their legs.

 2.  Their Territory Is Threatened.  You might think of your house or apartment as YOUR place.  But dogs see it as THEIR place.  Which is why they bark when someone knocks on the door, or when they see another dog close by.

 In those cases, their tail is usually up, their ears are forward, and they're trying to look threatening.  With that said, some dogs bark when they're EXCITED to see someone.

 3.  They Need Something.  As in, they're hungry, they're bored, they're hurt, their favorite toy is stuck under the couch, or they need to go outside.

 4.  They Want Attention.  Which could mean they want to play, or they found something interesting they want you to see, like a squirrel outside the window.