K9 Loof was a bloodhound who searched Avery’s Auto Salvage, along with several other bloodhounds and cadaver dogs. Loof picked up the scent of the victim's blood near Barb Janda's red van she photographed on Halloween afternoon. She followed the scent of the victim's blood to Steven Avery’s garage, where she showed “much interest”. She followed the victim's blood scent to Steven’s burn pit, but was halted by her handler due to an aggressive appearing German Shephard.
From the burn pit area, Loof followed blood scent to the trailer of Steven Avery, and wanted to enter it.