GasDocUnit is a CO2 euthanasia device for mice and rats developed by Medres – Medical Research GmbH, a company based in Cologne, Germany. It complies with standards such as the AVMA Guidelines. The unit designed to connect directly to your breeding cage automates the entire euthanasia process, from the start to the end of the euthanasia cycle. Recently, compassion fatigue among those involved in animal research has gained attention. This product, which adheres to animal welfare standards, not only reduces the distress experienced by the animals but also helps alleviate compassion fatigue in personnel and improves work efficiency.