I am so sorry this happened! It's absolutely horrifying! My thoughts are with you and your family during this tragic time.   
As far as the television news crew, they will want tons of visual aids. Anything to help tell the story. Offer up any visual aids you have. They may want some and not want others, but it's important to give them as much as they can take. It also makes for a much more dramatic story.   
Make sure to not answer with just a yes or no. You want to elaborate. Don't worry about babbling. They'll direct you as far as where they want your answers to go. As long as the reporter isn't new, he/she should be able to get everything necessary to create a compelling story. If you think he/she is lacking or not asking the right questions, you can help guide the interview as well.   
They may even want to do a reenactment of sorts. Like make the camera "walk" where you walked the day it happened. 
Don't be afraid to show emotion. I know it probably couldn't be helped anyway. If I were interviewed about it so soon, I would be bawling uncontrollably.   
Oh, and try not to make any rash statements like, "I wish the owner of the dog was dead." I'm not saying you would, but statements like that said in great emotion don't help the story, and the reporter may put that in there because he/she may see it as a "juicy twist."   
I hope you get a kind, thoughtful reporter.   
I hope all goes well with the interview, and please keep us updated!     
				__________________  Jamie and Addie        |