Cow burps are a large source of methane, a gas which contributes to climate change. Our experiment involves two different methods of measuring methane. One method directly measures the burps by giving the animals a treat when they stick their head into a specialized chamber where their exhaled methane can be studied. The other method uses a laser to determine the amount of methane across the entire cattle pen. We compare how similar the results of the two methods are, and discuss the advantages and disadvantages of each.