We have 3 dogs, 2 that absolutely hate each other.

The first dog, a female rottweier, bread from german pepered rotts, 7
years old, 75 lbs, have had since she was 11 months. Spayed last December.

Second dog, a male malmaute/lab mix. 125 lbs. 4 years old, neutered 3
1/2 years ago. Have had since he was a puppy.

Third dog, a female lab mix (we found her in park behind our house last
year), 69 lbs, approximately 1 1/2-2 years old. We had her spayed a
month ago.

The lab mix has taken to attacking our rott any chance she gets. We were
hoping having her spayed would stem some of the aggression.

It's to the point they cannot be together anymore. The rott used to
ignore her, until a bad episode a month ago where the lab attacked the
rott to the point the rott required stitches.

Not knowing what to do, we've kept them seperated, allowing only one of
them in the living room at a time (the malamute gets along with both and
can be with either any time)but can't continue living like this. I want
my dogs in the same room with me.

We've been trying to reintroduce them, allowing to sniff each through a
slightly open window, to see each other on the other side of a glass
door, but have been afraid to allow them together.

We did try over the weekend to muzzle them both and allowe them together
in the living room. In less then five minutes they were each other. At
first they were nosing and sniffing each other, then so fast we didn't
see who attacked first they were on each other. Thank god we had the
muzzles and leashes on so we could safely pull them apart.

Besides hating each other, they are both the sweetest dogs I've ever had.

Is there anything we can do to get some sanity back into our lives?