Yep, Methane is natural gas (along with Propane). The main problem is how to bottle it, I aint tried but I would imagine the cow would be upset if you tried to shove a collection tube up it :lol: On a serious note a more viable way to collect methane would be from landfill sites (at the majority it is flared) the problem is you have the issue of seperating out the methane from other gases (such as H2S etc)
I dont think I wanna know how you know that.

