Steve Barley is nuts about squirrels. He's been building obstacle courses for the squirrels in his backyard for years.
Back in 2010 my son and I made the first obstacle course from old bric-a-brac and a washing line for the black squirrels in our back garden to crack. Nearly ten years on, my back garden challenges for our furry friends have become bigger and more elaborate or, as my wife puts it - 'Really, this is getting out of hand!'
You'll find plenty more squirrels trying to outwit Barley's devilish contraptions at his YouTube channel. -via Metafilter