Worried, I checked his legs and feed, but couldn't see or feel anything wrong, so we continued on our walk. He stopped again, refusing to walk straight ahead.
Then I realised what the problem was.....
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Catkins!! Lots of little, inoffensive furry catkins that had blown off the tree's and onto the footpath.
Apparently, these a VERY scary and not to be walked on!

Silly Wiggle!