A cat named Milo becomes an unwitting "cat burglar," picking up keys with her magnetic collar.

Milo's owner, 27-year-old Kirsten Alexander, told The Daily Telegraph she put the collar on her pet feline five weeks ago when she installed a magnetic cat door to keep other kitties out.

Little did she know that Milo's collar had picked up 20 sets of spare car and house keys as she roamed the neighborhood during the time.

Alexander found 12 sets of the keys in her garden and eight around her home, but didn't connect the two until Milo walked in with a new set affixed to her neck, The Daily Mail reported.

The keys have since been returned to her neighbors, who laughed off Milo's mischief.