Ruminant animals are response to the emission of enteric methane due to the fermentation process which happens in their rumen and produced methane as a byproduct. Methane is one of the most important (GHGs) greenhouse gases because it is a major cause of global warming due to its ability to absorb heat in the atmosphere about 25 times more than carbon dioxide. An adult cow can belch about 400-500 liter methane/day, and this production causes a loss in the gross energy intake with a percentage from 2 to 12%. So, there are many strategies to mitigate the methane emissions from the ruminant animals that we will demonstrate in this work such as plant bioactive compounds, dietary lipids, exogenous enzymes, defaunation. On the other hand, there are many methods to measure the methane emissions from the ruminant animals such as the SF6 Tracer technique, open-circuit chambers, and headbox. The objective of this review is to evaluate options that have been demonstrated to mitigate enteric methane emissions produced by ruminants and the methane emission measurement options to be considered under Egyptian conditions.