Minecraft 1.4.6, Minecraft 1.4.7, Snapshot 13w09c, Snapshot 13w10a
Animals can breed over distanced up to almost 8 blocks when only seperated by fences.
What I expected to happen:
Animals would have to go together to breed.
What actually happened:
My test-cows were breeding over a distance of 8 blocks (have to be close to the fence tho when it's 8 blocks)