i am scheduled to meet an owner her not neutered dog next week I am not sure i feel comfortable with that. Aren't un neutered dogs more aggresive and mark their territory inside and outside?

Dogs that are not neutered are difficult to care for. They have needs and if it is not met then they act out. They are usually on the hunt for a female who is in heat. Even taking them for walks is difficult as they tend to pull towards the smell of urine detecting if their is a mate around. Like Amber said, they will want to mount other dogs as well, causing a fight. The worse for me is their need to mark in the house, for that reason alone I do not take unneutered dogs. In my experience, they are also very aggressive. My sister refuses to neuter her German Shepherd, I kid you not, he gets in a fight at least once a week or shows aggression towards others constantly.

I haven't noticed much of a difference. I've watched a few intact males and, like any other dog, issues they have really stem from their personality, socialization and training. They can be humpers (especially teenage boy dogs), and sometimes need help listening when other dogs tell them to knock it off (again, usually the teenagers.. kinda like with human teens). But then again, I've had fixed older dogs with humping obsessions who didn't have the self-discipline to stop when asked. A couple of the intact dogs I've watched have had accidents in the house, but that's common with new dogs when they first come into a new place, regardless of whether or not they've been altered. None of the intact dogs I've watched have had a recurring problem in the house when provided with regular potty breaks.

As others have noted, intact males have more tendency to roam, but I've never had more of an issue walking an intact dog than any others. Like with any dog you're sitting, supervise and contain so there are no chances for escape.

They hump more and tend to up set the pack with all their humping which in turn can lead to fights. They aren't being aggressive, just not listing that the other dogs are telling them "NO, stop humping me." That has been my experience, I don't take in tacked males or females for that reason. Hope that helps and happy sitting, Amber G.