I just got a chiweenie two days ago. He is 6 weeks old and soooo cute. His name is Carhdy (Carhartt is his full name). He shakes a whole lot and I was wondering if its cause he's cold or if it's just cuz he misses his siblings and mom?? I don't really know anyhting about tiny puppys, the only dogs I have raised from puppys are pitbulls and they never shook. Any advice on what to do or what could be causing him to shake would be great. and one more question....whats the lowest temp. pups can be in?? Should they stay at a constant warm temperature??