[wendyl]

I have 2 beautiful spayed female rottweilers. Katie is 5 and was adopted thru Rottweiler Rescue 4 years ago. Sierra is 4 and was adopted from a litter at 5 weeks old. For 4 years, the girls have gotten along very nicely. In fact, Katie has been a mother to Sierra...even cleaning her face and ears.

But, a month ago while on our daily walk, Katie viciously attacked Sierra and would not let go of her neck. Sierra had a few wounds, but nothing serious.

We watched the girls like a hawk, and everything seemed fine at home.

Last week, we went for another walk, and Katie attacked Sierra again for no apparent reason. I tried so hard to break up the fight but couldn't. Both dogs were injured and hospitalized.

Neither dog has ever shown aggression toward us or anyone else. Although stupid on my part, I was in the middle of the fight, but did not get one scratch. (Lucky, I know).

Katie will be getting her "E" collar off Friday, and I am very worried about another fight. Right now, she can't do much with the big plastic collar around her head.

Can anyone help me find answers to why Katie would do this? Or, how we can avoid another incident? She is such a mellow dog most of the time.

It would break my heart to have to get rid of one of them!

Any information would be greatly appreciated.