ive got a whippet thats of sooty sam lines, he,s 22.5inch ats and around 36/37lbs, and his stamina and recovery rate are quite impressive, which shocked me as i thought they were plugged after 300 yard dashes,but he does suffer the next day as he looks like a rescue case, the weight just drops of him, as for the cold, he wont go out side for a piss if its raining,lol but if your out in the field and he,s mooching about it doesnt bother him at all, but if he has to stand about for too long you can tell he aint happy,