Why Do I Talk Louder to These Beauties

Does this happen to you?It's not when I'm angry or excited..well sometimes.  But I find myself when I'm talking to my 8 year old and my two dogs I talk in a louder voice.  I just figured this out the other day and I'm not sure why I do this.

I think to myself..is it because they're my kids.  Do I think they can't hear me?  Are they annoyed by my loudness?  I asked my daughter if she thought I talked louder to her than talking to other people and she said, "You talk loud when you talk to yourself".  "What"?  Apparently I talk loud to myself...that's weird.  But then she said, "Yes you talk louder to the dogs than me."  Interesting..But why?

Do you find yourself talking louder to your kids and or your pets than other people?