Highly social, Prairie Dogs live in large colonies called âtownsâ and in collections of families that can span hundreds of acres. A Prairie Dog town may contain 15 to 26 family groups, made up of a series of burrows with mounded entrances. Mother Prairie Dogs provide most of the care for the young.
BTU, or British thermal unit, is the industry-standard used to measure the heating efficiency of furnaces. In addition to BTU ratings, furnace manufacturers might include a Manual J Load rating and a percentage of energy efficiency.
BTU stands for 'British Thermal Unit' and is a measurement of energy. One BTU is approximately the amount of energy required to heat one pound of water from 39Â°F to 40Â°F. BTUâs are commonly used to measure and compare the heat output of different hot water radiators.