So annoying to go looking for old pix on the blog and find they're not there any more! That'll teach me to mess around organising the photos in Photobucket.
I'll have to sort them out - I was looking for a photo of Floyd...
Hurrah! I'd moved the photos into files, so now I've figured out how to fix them, all that was missing in the link to the pet photos was Pets/th_ before the actual photo id.