Researchers have calculated that dinosaur flatulence could have put enough methane into the atmosphere to warm the planet during the hot, wet Mesozoic era, Reuters reports:-) And just like big cows, their plant digestion was aided by methane-producing microbes.

“A simple mathematical model suggests that the microbes living in sauropod dinosaurs may have produced enough methane to have an important effect on the Mesozoic climate,” researcher Dave Wilkinson of Liverpool John Moores University said in a statement.
I suppose, these reseaches are strange at least.
