[Former Proud Canadian]

Is methane a “fossil fuel”? If so, what animals died on Titan to create it?

[Savage Beast]

Interesting question. If Titan has a sea of methane, doesn’t that render it almost a certainty that hydrocarbons are ubiquitous in the universe and thus life as we know it certain to exist elsewhere?

[Kartographer]

"Is methane a “fossil fuel”? If so, what animals died on Titan to create it?"

Maybe the only life on Titan is politicians? It would explain all the gas as well as why we can see life, its all on the bottom of the ocean.

[Laserman]

This also makes me wonder if the source of earth’s oil is not from dead organics but a more basic, fundamental source.

[dr_lew]

Is methane a “fossil fuel”? If so, what animals died on Titan to create it?

It all depends on what the definition of "IS" is. For example, "IS" ethanol a product of fermentation? If so, what kind of yeast cells in interstellar space produced vast clouds of ethanol seen there?

[U-238]

The methane comes from inside the moon through the various geological forces.

http://www.spaceref.com/news/viewpr.html?pid=18410