you know what that is good thinking as hypothyroidism can cause them to be cold as my dd is hypothyroid so make sure they have a full 6 panel thyroid add on --I bet you it is hypothyroidism as they tend to get that at an older age usually --get this done asap as hypothyroid they can have seizures from this as well. We work with dr jean dodds who is excellent with this and she is at
Animal Blood Bank and Restore Health Cente and she could analyze results for you -- most important is a yorkie should be t4free 1.0 if less than that then hypothyroid. My dd was .30 before meds and now .92 -- it is an easy fix
