Alison - thanks for sharing that info - I find it fascinating! I've got it written down so will def test it out.

Tilda - maybe it is a hangover from the immunisation? Jack is grizzly today, too. I wonder how it makes them feel? Poor little darlins.

Willow - good luck with the visit to work! You never know, Harry may just sleep the whole time and not even know he went out!