Thanks, everyone! We went to a lot of trouble to set up this picture for Chloe's birthday and it seemed a pity not to show it off on the forum.
Yes, Willy, those are Hausser composition snails. Someone with whom we used to trade animals visited the Hausser factory in the mid-1970's after they had changed to all-plastic production. He asked if they had any old composition animals left, and they gave him a box of snails! So we got a pair for our Ark.
Sue & Lesley