Here’s what you’ll learn when you read this story:Archaeologists in Sweden discovered the ritual burial of a dog from 5,000 years ago. The remains of the dog sit alongside a nearly nine-inch-long, finely polished bone dagger. The dog was laid to rest in a lake, with the remains placed in a bag made of animal skin and weighed down by stones. When buried, a finely polished bone dagger (likely made of elk or red deer bone) was placed at the paws of the dog. Related Story Clues Emerge About Mysterious Tunnels Below EuropeAlong with the ritualistic remains of the dog, archaeologists working alongside the construction team discovered well-preserved wooden material from between 3300 and 2600 B.C.E.