Having two fully intact males can lead to issues as they "have it out" for dominance. I have two intact of each sex and while it's not stressful with my two sets(they know I'm the boss) squabbles do and will happen.
My males do better with females than they do other males, but those are just my particular dogs and your dogs may be completely different.
Being that I have two sets of intact animals, two of which are adults and fully capable of reproducing; keeping them separated during fertile periods is a strain but not impossible. When my female goes into heat my male stays upstairs, behind a closed door and sometimes crated when she's let out.
She uses the bathroom at a different time than the rest of the pack, does not go for walks, is supervised while being outside, and is crated in a different room behind a locked door when the others are out. So basically she's a hermit for 21 days. It's not easy or fun.
That being said, that particular female is a larger breed and her heat is usually predictable so I can usually tell by her behavior and vulva enlargement when her heat is due. My male has never barked when she's in heat, but he's never been bred so I'm sure that diminishes his reaction to her substantially.
Kupo may be great with other animals now, but he's probably not yet sexually matured. Having another fully intact, able to reproduce male in what he considers "his" territory may bring out aspects of his personality you'd never imagine he'd have.
Think some more on it. Do you plan on using them both for stud? |