5 Month Sudden Aggression - First Heat?
I wasn't sure whether to post this in Breeding, Puppies, or Behavior so I apologize if this has been covered before.
I have a 5 month (as of 10/12) female that I've had since she was 6 weeks. She is generally timid, submissive, super sweet and obedient. In the last week she has started barking at passersby and the dogs down the road when they come near our property. All of which I'm glad for (rather than her cowering in the house while our male puppy does the work!). But she has also started barking and lunging at her best bud, our 6 month male Rottweiler/GSD mix. When she does this it's totally random and unprovoked, other than him just walking by. And just tonight she growled at my 20 month old when he was sitting next to her. And then my 3 1/2 year old went to take a napkin she was chewing and she bit him on the hand. Nothing serious, but scary nonetheless.
So I'm hoping she's in her first heat and that's the reason for the aggression. Our vet said about 5 1/2 months is about the earliest this can happen. I am calling to schedule her spay early first thing in the morning. I really hope this solves the sudden personality change.
What do you guys think? Is any of this normal for a GSD?