I had a Dnepr. The 2wd ones go very well in the snow...like a tank!
My Dnepr page.
My Dnepr Photos by pamaguahiker | Photobucket

Regarding carrying a dog during a ride. I use a Burley child chariot. I have had my dachshund with me for a few overnighters. Never long week tours, just the 24 hour overnighters. He travels well and enjoys the breeze. He has a heart murmur and can't do a great deal of exertion. I only take bare essentials to put in cart because i don't want to over load it and cause myself excess work. Years ago, i had a BOB trailer and a very obedient a fun dog. We would ride 40-50 mile rail to trails and other rides. Amusing pup, Simba would get off and run all over around where i was riding, jumping into creek, etc...then run back out and jump on with no problems and just chill out! I could never get over the fact that every time if came to a hill...the little bugger would sit on for the ride. ugh!