In your opinion, what do you think the most challenging breed(s) of dogs are to own?

In my opinion, small hyper dogs are the most challenging dogs to own. But that's just me.

any of the more independent natured dog breeds can be hard to work with, the ones that originally aren't bred for companion dogs but to perform some sort of task. Mainly the ones that were left on their own to perform their duty without much imput from their master. These breeds can seem to be less obediant, but they are just used to doing their own thing, dont always need their humans approval.

I have a hard time with Beagles, I can't house train them as easily as other dogs, don't know why either!

I think big hyper dogs are the hardest!!!Because you always have to go take them on walks.Trust me, i used to own a Malamute!!!!!!!!

Yeah the working or herding groups can be hyper without proper exercise, but at least they try to do a job, I still say beagles, they live only for their noses! LOL