@peterchilds – Neville & Nugent are dogs, so allowances have to be made for the fact that they don’t see everything. They’re often busy chasing sticks, sniffing and chasing cats, etc. But they pass on their thanks for finding and posting!
@marijn – that sounds interesting. But I suspect any cure will be ten year’s away (isn’t it always?). Do you have a link to the research?