The methane output of cattle and other herbivores, which can release 30 to 50 gallons per day, and of termites, is also due to methanogens.
ðə mˈɛθeɪn ˈaʊtpʊt ʌv kˈæɾəl ænd ˈʌðɚ hˈɜːbɪvˌoːɹz, wˌɪtʃ kæn ɹᵻlˈiːs θˈɜːɾi tə fˈɪfti ɡˈælənz pɜː dˈeɪ, ænd ʌv tˈɜːmaɪts, ɪz ˈɔːlsoʊ dˈuː tə mˈɛθɐnədʒənz.