I went today to call some coyotes. I didnt get to det any calling in due to some guys trespassing. Anyway I let the dogs out to run around and after a very short period they both started acting like they were walking on thumb tacks. The temp was -4 with about 8 inches of snow. I have never seen them act like there feet were hurting before. This is the first time I went calling with dogs in these kind of temps. Can I due anything for them or if I keep them out can I hurt them?