I have just lost my dog a few months ago due to cancer. He was a 70 lb husky greyhound mix. He was bred for sledding purposes but was given up to a shelter where we picked him up when he was about 2. I am used to having to walking a dog for 30-40 mins in the morning before I go to work and for an hour or an hour and a half after, with me jogging or roller blading as well. My previous dog was perfectly ok with being home for an 8 hour interval, but I suspect that might have been the greyhound side of him. I was wondering if any Siberian owners can tell me if one would be ok with me. Other then walking for 1.5 to 2 hours I also love to play inside with them, tug of war or just chase them around the house and let them chase me. I also live in a duplex and am worried if they would constantly howl? I am also considerering a malamute. Any ideas?