Book written from dogs point of view? Weird?

I'm writing a story about a 14 year old girl that is murdered by her step-father. Her best friend (a boy down the street) is out to prove it was the step-dad even though the police believe it was a street guy (hobo?) and are searching the streets to find him. The girls mother goes crazy with grief and the step-dad is now in charge of the 2 younger siblings. I was thinking of writing it from a pet dogs point of view but don't know if that would be too weird? Also haven't decided how he dumps her body and it's found... Thanks ahead!