Posted : 6/5/2007 11:17:33 AM
I have three spayed females and two neutered males. They were brought into the house, over several years, in this order:
female 1, adult, spayed at unknown age
female 2, puppy, spayed at six months
male 1, puppy, neutered at six months
male 2, adult, neutered at unknown age
female 3, adult, spayed at unknown age
The only problem I've had was between female 2 and male 2 - they had a bloody fight when the female was resource guarding me the second week male 2 was here. Since then, no problems, and no problems with any of the others.
However, I did notice some changes when I introduced male 2. Male 1 hadn't ever lifted his leg to pee or marked anything. Now he lifts his leg and marks everything in the backyard, mimicking male 2 - nothing in the house though. The two males take turns marking the spots where the girls go to the bathroom. Male 2 is very dominant, but that works because male 1 doesn't care to be.
I take the two males to play at a house where there are five spayed females that live in harmony and we don't have any problems that stem from sex. The only issues arise from male 2 being SOOOO dominant.
So I don't put much stock into male-female, male-male, female-female myths. It's more if this particular dog and that particular dog have complimentary or clashing personalities.