According to Patrick Hanson, the CEO of Luxaviation, a Luxembourg-based luxury airline firm, having pets can be just as polluting as traveling by private jet. In defense of his own industry, he declared recently that one of his company's customers produces around 2.1 tons of CO₂ each year, roughly the same emissions as three pet dogs. This comparison draws on a calculation made in 2020 by carbon-footprint researcher Mike Berners-Lee.
