Bump for Guinness - Bernies are very gentle dogs (although huge and as a side note, drooly) - please if you've seen her (looks something like a Saint Bernard but a little trimmer)) let the OP know.
Thanks MC! It's my fault completely (left the door open last night while I put a sleeping child to bed) and now the whole family is walking around glaring at me!
I hope Guiness is home with you soon - I would be distraught if my girl was missing. Hopefully, she will be easy to find (or spot, at that size) Good luck, my thoughts are with you and with Guiness, she must be stressed too.