Flatulate

Every time cattle belch - and, to a smaller extent, flatulate - methane is expelled and enters the atmosphere, where it acts as a greenhouse gas.

Source: tatoeba (10244318)

1985, James L. Framo, “Rationale and Techniques of Intensive Family Therapy,” in Intensive Family Therapy, Ivan Boszormenyi-Nagy and James L. Framo eds. http://books.google.com/books?ie=UTF-8&hl=en&id=kfmXSIJPvqEC&pg=PA206&lpg=PA206&sig=b3bCCRJV6GdT6XexcyD0xVyRv88, Where else but in his own castle, with his own family, can a person pick his nose, flatulate, lose his temper with impunity, whine, let the child in him emerge—in short, regress and “be himself”?

Source: wiktionary

Horses defecate and flatulate on the move.

Source: wiktionary

While in the bathtub, he thought that he had to flatulate, but defecated instead. His mother had berated him mercilessly.

Source: wiktionary