Sergio Ferrer, 36, has been arrested and charged with first-degree murder and aggravated robbery in connection with the killing of Paul Peavey, a 57-year-old Colorado dog breeder found dead on August 24. Peavey's body was discovered on his Idaho Springs property, which had been ransacked, with 10 of his European Doberman puppies missing. Ferrer, initially detained for unrelated charges in Nebraska, reportedly confessed to shooting Peavey but claimed it was in self-defense during a confrontation. Investigators believe the puppies, all microchipped, may have been sold on social media after the incident, and they are urging anyone who recently purchased a Doberman to check for microchips. Peavey was known for breeding high-quality Dobermans, selling them for up to $4,500 each, and his adult dogs were left unharmed on the property. The search for the missing puppies continues as authorities seek information from the public to aid in the investigation.