Workmen renovating a property found bones under the floorboards and called police.
Police arrived at the house on Woodhill Lane in Morecambe at 3.30pm on Thursday and sealed the house off.
Crime scene tape surrounded a skip outside the house and crime scene investigators were called to the scene to ascertain if the bones were of human origin.
A spokesman for Lancashire Police said: “After inspection the remains are believed to be animal bones.
“It is being treated as non-suspicious.”