How many cats do you need to heat an energy-efficient home?
It’s the question on everybody's lips. Well, maybe not everyone's lips, and it's possible this is a niche topic, but it is relevant.
A 3kg cat has a heat output of 14.8 watts, or 129.65 kilowatt-hours - the metric commonly used by power companies to show you how much energy you're using.
These numbers are important when it comes to the design and building of energy-efficient homes, as the heat output of random things like cats can lead to overheating.