For the first time Scientists at Exeter University have been studying the British Snail's behavioral patterns and the answer is:
The study which was initially intended to discover how the Lungworm, an infectious parasitic worm was spread by slugs and snails. Lungworm which is typically spread by the consumption of Snails and/or dog poop, can be fatal in dogs, and owners are encouraged to be aware of the risks associated with the parasite.
FACT: Snails often follow each others slime trails to piggy-back on the slime trails of other snails!
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