Isaiah 11:6: What shall lie down with the lamb? 

Many people are claiming the bible said the lion shall lay down with the lamb, whereas today that appears to have been changed to a wolf.

The wolf also shall dwell with the lamb, and the leopard shall lie down with the kid; and the calf and the young lion and the fatling together; and a little child shall lead them

Cynics are saying this only goes to show Christians don't actually read the bible in detail. Many would certainly disagree, but the actual line, whilst mentioning a lion, does plant an image in the mind which could end up being a lion and a lamb lying down together, and so triggering a Mass Memory Discrepancy Effect.

References

This appears as a Lion in many hymns, and numerous paintings inside churches.Just as many references are made to wolves too, such as "a wolf in sheep's clothing" or "the boy who cried wolf".

There are many, many references to The Lion and the Lamb to be found today. Here's the Lion and the Lamb on the summit of Helm Crag in Cumbria in the UK:

Here's the quotation for the Ambassador College seal:

The Lion shall dwell with the lamb and a little child shall lead them in the world tomorrow

-- Isaiah 11.6

Many people are so sure the Bible once did say "The Lion shall lay down with the Lamb" that they are even claiming to know when it changed, with the consensus being around 2008/2009.

Here's the actual verse as seen in the Bible today:

The wolf will live with the lamb, the leopard will lie down with the goat, the calf and the lion and the yearling together; and a little child will lead them.

-- Isaiah 11.6

"Child of Light" put up a YouTube video on this: