Okay, this turned out SUPER long, but if anyone wants to read any or all of it and basically tell me which breeds can gogogo all day and still be reasonable to live with, you get a cookie!
I was talking to a local trainer about a future breed for me and I am still undecided. I don't plan on getting a pup until Zoe is gone, but want to know what I am getting into ahead of time. She was rather horrified at my love of sighthounds and terriers, as she is into herders herself.
I really want a dog that can accompany me on any adventure. Biking all day, hiking super difficult terrain all weekend (it's not a hike to me unless it involves climbing a mountain,) running all... afternoon. :-D You get the idea.
When looking at potential future breeds, I tend to be able to find the other traits I want, but then realize that breed may not have the endurance I want. Breeds that have the endurance I want end up having other traits I DON'T want.
For example, Malinois have crazy endurance, but are too much dog for me. Dalmatians have endurance in spades, but I want to avoid getting a pup when doing so means it probably had siblings euthanized for deafness. Border Collies don't quite have the right "feel" from a temperament perspective for me, though I could maybe find the right one. Koolies sound perfect, but I would like to be able to get into conformation, plus my understanding is that a non-AKC breed would have to be neutered to even do AKC agility trials.
Oh - longevity is a HUGE priority for me. I want a dog that can do the gogogo thing for many, many years.