I thought only fish/seafood contains the long-chain EPA and DHA that we need (and eggs some DHA). Some people don't make this stuff that easily from ALA (like me) so I supplement and eat fish.

It seems that grain-fed beef IS much higher in omega 6 than omega 3 - nutritiondata.com has a breakdown of all the fatty acids found in different meats and as far as I can see, just about all beef, chicken, pork etc has much more omega 6 than omega 3. I'm assuming all their sources are bog-standard grain fed.